{"title":"Smokies","description":"","products":[{"product_id":"981-gt4-spyder-race-headers-425hp","title":"Dundon 981 GT4 Clubsport Race Headers","description":"\u003cp\u003eDundon 981 GT4 Race Headers provide substantial gains in torque and horsepower throughout the rev range. They are a race system so are for track or off-road use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRace Headers are for Non USA or racing vehicles in the US. \u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAll Dundon headers are made with 321SS, the advantages of this are numerous and include, better fitment, higher heat tolerance, superior resistance to exhaust gas corrosion and a lifetime structural warranty to the original purchaser.\u003c\/p\u003e\u003cp\u003eThe headers attach to the factory PSE muffler and are quiet with no drone at cruise, but put your foot down and they're all kinds of flat six glory.\u003c\/p\u003e\u003cp\u003eDundon Headers are specifically designed for each vehicle and engine.  Unlike our competition that uses a one size fits all, we tailor each system to the unique needs of each engine.\u003c\/p\u003e\u003cp\u003eDyno showing Stock GT4 vs Dundon GT4\/Spyder Race Headers.\u003c\/p\u003e\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/GT4_Prod_StockTune_bc97effb-5f65-46ef-8fc9-83d0384f6ad2_480x480.jpg?v=1582133576\" alt=\"stock tune\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003cstrong\u003eGains Over Stock.\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e3600 RPM: +42 wtq\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e5000 RPM: +36 wtq, +34whp\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e5800 RPM: +15 wtq, +16whp\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e6500 RPM: +28whp\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e7000 RPM: +30whp\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e7500 RPM: +41whp\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eOur dyno read the stock car at 330.8 whp at 7400, Porsche rates the car at 385bhp at 7400, this is 14.1% loss with our Dynapack 4000 hub dyno running the car in Rolling Road mode using the factory PIWIS tools.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDundon Race Header equipped GT4 is now at: 426BHP\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eGT4 Tunnel video\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/youtu.be\/OJG-wdxjL0g\"\u003e\u003cstrong\u003ehttps:\/\/youtu.be\/OJG-wdxjL0g\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eDundon 991 GT3 Stage 2 chasing GT4 Stage 2\u003cbr\u003e\u003ca href=\"https:\/\/youtu.be\/XpC3713d8wI\"\u003ehttps:\/\/youtu.be\/XpC3713d8wI\u003c\/a\u003e\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Default Title","offer_id":10719359336484,"sku":"100-30304","price":6195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/981-GT4-Clubsport-Race-Headers-1x1.jpg?v=1789767155"},{"product_id":"981-gt4spyder-cobb-accessport-with-dundon-pro-tune","title":"981 GT4 Cobb Accessport with Dundon Pro Tune","description":"\u003cp\u003eIncludes: Cobb Accessport and Dundon ProTune.\u003c\/p\u003e\n\u003cp\u003eDundon Motorsports is happy to provide the Cobb Accessport for the 981 GT4\/Spyder.  We're Cobb Pro Tuners and have developed a great tune for the Dundon GT4\/Spyder Race Headers.\u003c\/p\u003e\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/GT4_Race_ProTune1_480x480.jpg?v=1582134211\" alt=\"GT4 Dundon Pro Tune\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003cstrong\u003eGains Over Stock including GT4\/Spyder Race Headers and Dundon Pro Tune:\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e3600 RPM: +50 wtq +32whp\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e5000 RPM: +55 wtq, +52whp\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e5800 RPM: +24 wtq, +26whp\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e6500 RPM: +30 wtq, +36whp\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e7500 RPM: +30 wtq, +43whp\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e377.1whp on our dyno works out to 438.8 BHP\u003c\/strong\u003e\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Default Title","offer_id":40133531893935,"sku":"901-AP3-POR-007-PT","price":2390.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/products\/981-gt4spyder-cobb-accessport-with-dundon-pro-tune-428436.jpg?v=1627084801"},{"product_id":"991-inconel-megaphone-center-muffler-delete","title":"991 and 997 Inconel Megaphone Center Muffler Delete \"Crack Pipe\" Exhaust","description":"\u003cp\u003eOur Megaphone crack pipe features...\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInconel 625\u003c\/li\u003e\n\u003cli\u003eMegaphones for enhanced wave strength (more power)\u003c\/li\u003e\n\u003cli\u003eFull 3.5\" X Pipe merge\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eYOU HAVE BEEN WARNED! This system sounds badass, BUT….\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIt was designed for race cars, and as such, it is UNCOMPROMISING\u003c\/li\u003e\n\u003cli\u003eIt drones at certain RPM\u003c\/li\u003e\n\u003cli\u003eIt vibrates the whole car\u003c\/li\u003e\n\u003cli\u003eIt causes anything that is loose to rattle and buzz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eIf anything above is concerning to you, the Crack Pipe is NOT for you!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eFor 997's with Dundon V2 Street Headers, only Mini Crack Pipe is available,*\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"991 GT3\/RS Stock Headers","offer_id":10834097209380,"sku":"100-30306","price":8065.0,"currency_code":"USD","in_stock":true},{"title":"991 GT3\/RS Dundon Race Headers","offer_id":32107076288548,"sku":"100-30308","price":8065.0,"currency_code":"USD","in_stock":true},{"title":"991 GT3\/RS Dundon Street Headers","offer_id":32107077238820,"sku":"100-30307","price":8065.0,"currency_code":"USD","in_stock":true},{"title":"997 GT3\/RS Stock Headers","offer_id":40765484990639,"sku":"100-30305","price":8065.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/products\/991-and-997-inconel-megaphone-center-muffler-delete-crack-pipe-exhaust-384674.jpg?v=1626998292"},{"product_id":"991-1991-2-gt3-carbon-gurney-flap","title":"991.1\/991.2 GT3 Carbon Gurney Flap","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003csection class=\"content\"\u003e\n\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"inner-page row\"\u003e\n\u003cdiv class=\"col-lg-12 col-md-12 col-sm-12 col-xs-12 xs-margin-bottom-50\"\u003e\n\u003cdiv class=\"content\"\u003e\n\u003cdiv class=\"clearfix\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-sm-9 no-margin-left body2-margin-top\"\u003e\n\u003cp\u003e991.1\/991.2 GT3 Carbon Fiber Gurney Flap aids in creating downforce without having to increase the angle of attack for the rear wing. Enjoy easy installation with 3M industrial double sided adhesive. \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"Dundon Motorsports","offers":[{"title":"Gloss","offer_id":10834097405988,"sku":"504-10004","price":695.0,"currency_code":"USD","in_stock":true},{"title":"Matte","offer_id":10834097438756,"sku":"504-10005","price":695.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/products\/99119912-gt3-carbon-gurney-flap-268991.jpg?v=1776091743"},{"product_id":"991-1991-2-gt3rsgt2rs-carbon-gurney-flap","title":"991.1\/991.2 GT3RS\/GT2RS Carbon Gurney Flap","description":"\u003cp\u003e991.1, 991.2 GT3RS and 991.2 GT2RS: Carbon Fiber Gurney Flap to aid in down force without excessive angle of attack. Attaches with 3M double sided tape for a secure and easy installation.\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Gloss","offer_id":46581275164847,"sku":"504-10009","price":695.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/products\/99119912-gt3rsgt2rs-carbon-gurney-flap-215798.jpg?v=1776091426"},{"product_id":"996997-gt3-turbo-only-harmonic-damper","title":"996\/997 GT3 \u0026 Turbo Harmonic Damper","description":"\u003cp\u003eReduce crankshaft harmonics while also increasing power and reliability with our rigorously tested Harmonic Dampers.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e997.1 GT3 and RS use the factory belt size (2260)\u003c\/li\u003e\n\u003cli\u003e996 and 997 Turbo must switch to size 2260\u003c\/li\u003e\n\u003cli\u003e997.2 GT3 and RS must switch to size 2260\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBelt is included\u003c\/p\u003e\u003cp\u003eCrank-Holding Tool Available Separately \u003ca href=\"https:\/\/www.dundonmotorsports.com\/products\/crankshaft-holding-tool-997-gt3-turbo\"\u003eHERE\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe Silent Killer\u003c\/strong\u003e\u003cbr\u003eThis is a term you have surely heard before, but probably not in the context of engines. Engine failures are not uncommon; all of us have either been the victim of a failure or know someone who has. Most often it is your typical failure, one we have seen or heard of before. Recently, failures that result from a different kind of cause are becoming more common. The Porsche GT3 engine has had quite a few harmonic failures as evidenced by the volume of emails I have received and our own unfortunate experiences. Just to put this in context, all engines suffer from this phenomenon.\u003c\/p\u003e\u003cp\u003eEngines create a continual series of vibrations known as harmonics. Each time the engine ignites the fuel mixture and there is combustion, the forces from these combustion’s act upon the crankshaft. The forces generated from these combustion’s force the pistons downward which, in turn, rotate the crankshaft. This is known as tangential torques. The rotating and reciprocating masses create torque pulses within the crankshaft each time it rotates.\u003c\/p\u003e\u003cp\u003eThe Porsche GT3 engine seems to be having its fair share of vibrational failures. We have seen crank pulley bolts and flywheels come loose, cam actuators come apart and in our own particular case we had an engine that broke the scavenge gears inside the oil pump. I know of other GT3 engines that have had similar failures. These failures are not new to the Porsche Boxer engine.\u003c\/p\u003e\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/broken-scavenge-gears-e1381263643894-300x210_480x480.jpg?v=1582126676\" alt=\"broken scavenge gears\"\u003e\u003c\/figure\u003e\u003cp\u003eHarmonics are not new. For years the Porsche Boxer engine has been thought of as a neutrally balanced engine with each pair of opposite pistons always in the same position and the forces are counter balanced or cancelled out. Not so. As engine internals have become lighter and lighter to meet mileage requirements the issue of balance and harmonics has become more real.\u003c\/p\u003e\u003cp\u003eSo how did we come up with the specifications of the new damper? First we had to understand the cause and then we needed to find the RPM range and the magnitude of the pulses. This was done by fitting up special test equipment at each end of an engine along with high speed impulse sensors and inputting this information into some very powerful software. Some of the areas of analysis that can be computed are, angular vibration velocities measured degrees per sec, angular vibration displacement measured degrees, torsion angle orders, energy generated at certain frequencies related to engine speed, and the energy generated at specific orders at their critical engine speeds. Essentially, by running the engine at different RPM’s under load we can measure the deflection of the crankshaft by the tooth count at each end of the engine. We know the degree difference between each tooth on these wheels so the deflection of the crankshaft can be calculated by the stroke or offset of the crankshaft and the degrees of deflection measured. We are extremely grateful for the assistance of an outside company who provided the test equipment and the software. This information is then supplied to the damper manufacturer who can then calculate the size and weight of the damper along with the size of the elastomer required. These new dampers are able to be rebuilt so anyone using one in a racing application can periodically rebuild it. The factory 997 RS pulley is located on the crankshaft by a very small amount of engagement 0.160”, with no interference at all, a small alignment dowel pin and held in place by the pulley bolt. We always see the end of the crankshaft nose showing signs of pulley movement. Earlier I stated where the pulley bolts have come loose. Crankshaft nose end moves, pulley moves, bolt comes loose. This new damper increases the engagement onto the crankshaft nose to over 0.500” almost all the way back to the front crankshaft seal. We have also included interference to the crankshaft nose diameter. The damper is located by the same dowel pin and the original pulley bolt. The outside diameter of the damper is engraved the same as the factory Pulley is. The OEM, TDC, and Timing marks are retained along with full 360 degree increments.\u003c\/p\u003e\u003cp\u003eAdded benefits can also be had in simple performance gains. A “straight” crankshaft, an engine with less “internal vibration” will always produce more torque. Would a race version of the GT3 engine gain torque if fitted with a damper? Absolutely, it’s an engine first, a Porsche engine second. A small amount of additional torque can make the difference. Removing all of the vibration from the timing chain, keeping the camshaft timing consistent with the designed position will always result in more torque. By adding a crankshaft damper designed especially for these engines to “match” the low speed frequencies causing the current failures, the counter acting absorbs ion of the damper will counter the crankshaft twist and eliminate the failures. Now changes to the engines displacement with longer stroke crankshafts, longer or shorter rods, etc. can be done. This added mass at the correct end of the crankshaft will allow owners to remove the stock heavy mass dual flywheels and change to the single mass flywheels. The greatest dimensional change in the crankshaft happens at the pulley end of the crankshaft. Even if no other changes are done to the engine the owner can now have confidence that the known parts to fail should not!\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Default Title","offer_id":38126095302831,"sku":"1001-20001","price":2075.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/996-997-GT3-Turbo-Harmonic-Damper-1x1.jpg?v=1789766742"},{"product_id":"997-1-gt3-cobb-ap-and-dundon-pro-tune","title":"997 GT3 Cobb AP and Dundon Pro Tune","description":"\u003cp\u003eTune your Porsche with a Cobb AP!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cp\u003eCobb Accessport - $1095 (997.1) or $1165 (997.2)\u003c\/p\u003e\n\u003cp\u003eDundon ProTune - $895\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"997.1 GT3\/RS Cobb AP","offer_id":10834099339300,"sku":"901-AP3-POR-005-PT","price":1990.0,"currency_code":"USD","in_stock":true},{"title":"997.2 GT3\/RS Cobb AP","offer_id":10834099372068,"sku":"901-AP3-POR-003-PT","price":2060.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/products\/997-gt3-cobb-ap-and-dundon-pro-tune-309590.jpg?v=1627084798"},{"product_id":"997-1-gt3rs-997-2-gt3-dual-cone-single-opening-carbon-fiber-airbox","title":"997.1 GT3\/RS Dual Cone Carbon Fiber Airbox","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003csection class=\"content\"\u003e\n\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"inner-page row\"\u003e\n\u003cdiv class=\"col-lg-12 col-md-12 col-sm-12 col-xs-12 xs-margin-bottom-50\"\u003e\n\u003cdiv class=\"content\"\u003e\n\u003cdiv class=\"clearfix\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-sm-9 no-margin-left body2-margin-top\"\u003e\n\u003cp\u003eFree up power and add some beauty to your engine bay with the Dundon Motorsports Carbon Fiber Dual Cone Airbox. On a stock car this airbox will free up about 5-7whp. On a Dundon Header equipped car, this airbox is good for about 8-10 whp!\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"Dundon Motorsports","offers":[{"title":"3.6L Airbox with Porsche Slim Fan","offer_id":46581274017967,"sku":"200-30024","price":3495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/997-1-GT3-RS-Dual-Cone-Carbon-Fiber-Airbox-1x1.jpg?v=1789767089"},{"product_id":"997-1-gt3rs-long-tubea-street-header-exhaust-system","title":"997.1 GT3 Long Tube Street Header Exhaust System","description":"\u003cp\u003eDundon Street (Catted) tuned length headers and valved side delete exhaust system for the 997.1 GT3 are available now! We were able to keep all of the things that people love about our race headers: scroll down to learn more!\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThe Dundon 997.1 GT3 Long Tube Street Header Exhaust System\u003c\/strong\u003e\u003cbr\u003e \u003c\/p\u003e\u003cp\u003eDundon Convertible Street (Catted) tuned length headers and valved side delete exhaust system for the 997.1 GT3 are available now!  We were able to keep all of the things that people love about our race headers:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eless weight\u003c\/li\u003e\n\u003cli\u003emore power,\u003c\/li\u003e\n\u003cli\u003egreat sound,\u003c\/li\u003e\n\u003cli\u003equiet when you want it to be\u003c\/li\u003e\n\u003cli\u003eno drone\u003c\/li\u003e\n\u003cli\u003elifetime structural warranty\u003c\/li\u003e\n\u003cli\u003e100% 30day money back guarantee\u003cul\u003e\u003cli\u003eif you try it and don't like it, send it back we'll give you your money back!\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eConvertible to no cats with the swappable test pipes for track days (available separately).\u003cbr\u003e \u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWe use 321SS (a superior grade of Stainless steel to the cheaper 304SS) and use a metal core spiral wound 200CPSI catalytic converter.  All our products are mfg in the USA in our shop in Gig Harbor, WA.\u003c\/p\u003e\u003cp\u003eBy routing the primaries up and positioning the catalytic converter more vertical we were able to retain 99% of the primary length of the race system. This is how we are able to achieve 25whp gains on the 997.1 GT3.\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"2.5\" (for OEM Muffler)","offer_id":46581273231535,"sku":"100-30098","price":8810.0,"currency_code":"USD","in_stock":true},{"title":"3.0\" (for Dundon Muffler)","offer_id":46581334769839,"sku":"100-30099","price":8810.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/9972-gt3-long-tube-street-header-exhaust-system-1735383.jpg?v=1762300576"},{"product_id":"997-2-gt3-and-rs-long-tubea-street-header-exhaust-system","title":"997.2 GT3RS Long Tube Street Header Exhaust System","description":"\u003cp\u003eDundon Street (Catted) tuned length headers and valved side delete exhaust system for the 997.2 GT3RS are available now! We were able to keep all of the things that people love about our race headers: scroll down to learn more! *V2.0 Headers shown - Updated in 2021\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003eThe Dundon 997 GT3\/RS Long Tube Street Header Exhaust System\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eless weight\u003c\/li\u003e\n\u003cli\u003emore power,\u003c\/li\u003e\n\u003cli\u003egreat sound,\u003c\/li\u003e\n\u003cli\u003equiet when you want it to be\u003c\/li\u003e\n\u003cli\u003eno drone\u003c\/li\u003e\n\u003cli\u003elifetime structural warranty\u003c\/li\u003e\n\u003cli\u003e100% 30day money back guarantee\u003cul\u003e\u003cli\u003eif you try it and don't like it, send it back we'll give you your money back!\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eConvertible to no cats with the swappable test pipes for track days (available separately).\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eWe use 321SS (a superior grade of Stainless steel to the cheaper 304SS) and use a metal core spiral wound 200CPSI catalytic converter.  All our products are manufactured in the USA in our shop in Gig Harbor, WA.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eBy routing the primaries up and positioning the catalytic converter more vertical we were able to retain 99% of the primary length of the race system. This is how we are able to achieve 27whp gains on the 997.2 GT3 and 30whp gains on the 997.2 GT3RS\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"2.5\" (for OEM Muffler)","offer_id":41180083060911,"sku":"100-30041","price":8810.0,"currency_code":"USD","in_stock":true},{"title":"3.0\" (for Dundon Muffler)","offer_id":41180083093679,"sku":"100-30042","price":8810.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/997.1-2_GT3_Long_Tube_Street_Header_Exhaust_System-2.jpg?v=1762465475"},{"product_id":"997-2-gt3rs-3-8l-dual-cone-carbon-fiber-airbox","title":"997.2 GT3RS 3.8L\/4.0L Dual Cone Carbon Fiber Airbox","description":"\u003cp\u003eWe based this design on the fabled 997 4.0L GT3RS.  It features dual conical air filters from the 4.0RS.\u003c\/p\u003e\u003cp\u003eOn a stock car this airbox will free up about 5-7whp.\u003c\/p\u003e\u003cp\u003eOn a Dundon Race Header equipped car, this airbox is good for about 8-10 whp!\u003c\/p\u003e\u003cp\u003eNote Fan Part 997.624.056.05 is required for fitment on cars with the original thick fan (most of them have been replaced by 997.624.056.05 by now...)  If you need to source it or are unsure, you can order our option that includes a new fan slim line decklid fan from Porsche.\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"997.2 GT3RS 3.8L","offer_id":10834100125732,"sku":"200-30025","price":3195.0,"currency_code":"USD","in_stock":true},{"title":"997.2 GT3RS 4.0L","offer_id":10834100158500,"sku":"200-30026","price":3195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/997-2-GT3RS-3-8L-4-0L-Dual-Cone-Carbon-Fiber-Airbox-1x1.jpg?v=1789759085"},{"product_id":"dundon-windshield-banner","title":"Dundon Windshield Banner","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003csection class=\"content\"\u003e\n\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"inner-page row\"\u003e\n\u003cdiv class=\"col-lg-12 col-md-12 col-sm-12 col-xs-12 xs-margin-bottom-50\"\u003e\n\u003cdiv class=\"content\"\u003e\n\u003cdiv class=\"clearfix\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-sm-9 no-margin-left body2-margin-top\"\u003e\n\u003cp\u003eDundon Windshield Banner!  Show your love for your favorite Porsche Performance Parts!\u003c\/p\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"clearfix\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv class=\"clearfix\"\u003e\u003c\/div\u003e\n\u003cfooter class=\"design_2\"\u003e\n\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-lg-4 col-md-4 col-sm-6 col-xs-12 padding-left-none md-padding-left-none sm-padding-left-15 xs-padding-left-15\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/footer\u003e","brand":"Dundon Motorsports","offers":[{"title":"Windshield Banner","offer_id":46581276737711,"sku":"XXX000A-FA1-Windshield-Banner","price":250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/Dundon-Windshield-Banner-1x1.jpg?v=1789768480"},{"product_id":"ferodo-ds1-11-for-991-gt3-steel-calipers","title":"Ferodo DS1.11 for 991 GT3\/RS Steel Calipers","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003csection class=\"content\"\u003e\n\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"inner-page row\"\u003e\n\u003cdiv class=\"col-lg-12 col-md-12 col-sm-12 col-xs-12 xs-margin-bottom-50\"\u003e\n\u003cdiv class=\"content\"\u003e\n\u003cdiv class=\"clearfix\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-sm-9 no-margin-left body2-margin-top\"\u003e\n\u003cp\u003eFerodo DS1.11 for 991 GT3 Steel and PCCB Calipers\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"Dundon Motorsports","offers":[{"title":"991 GT3 Front","offer_id":10834103894052,"sku":"603-FCP4664W-N","price":619.0,"currency_code":"USD","in_stock":true},{"title":"991 GT3 Rear","offer_id":10834103926820,"sku":"603-FCP4665W-N","price":609.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/Ferodo-DS1-11-Track-Pads-for-Radi-CAL-Calipers-1x1_14d340fe-59eb-43f9-a582-8bc0ea9b670b.jpg?v=1789767058"},{"product_id":"ferodo-ds1-11-track-pads-for-radi-cal-calipers","title":"Ferodo DS1.11 Track Pads for Radi-CAL Calipers","description":"\u003cp\u003eFerodo DS1.11 Track Pads for Radi-CAL Calipers including burnishing.\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"DS1.11 Front Pads","offer_id":46581275656367,"sku":"603-FRP3144WB","price":602.0,"currency_code":"USD","in_stock":true},{"title":"DS1.11 Rear Pads","offer_id":46581334507695,"sku":"603-FRP216W","price":430.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/Ferodo-DS1-11-Track-Pads-for-Radi-CAL-Calipers-1x1_14d340fe-59eb-43f9-a582-8bc0ea9b670b.jpg?v=1789767058"},{"product_id":"ferodo-ds2500-street-brake-pads","title":"Ferodo DS2500 \"Street\" Brake Pads","description":"\u003cp\u003eFerodo DS2500 \"Street\" Brake Pads\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"997 GT2\/GT3 Front","offer_id":10834104057892,"sku":"FRP3075H","price":551.56,"currency_code":"USD","in_stock":true},{"title":"997 GT2\/GT3 Rear","offer_id":10834104090660,"sku":"FRP3143H","price":320.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/products\/ferodo-ds2500-street-brake-pads-142470.jpg?v=1615920385"},{"product_id":"gt3-321-side-muffler-deletes-for-997991","title":"GT3 347 Side Muffler Deletes for 997\/991","description":"\u003cp\u003eEnjoy 347 Stainless construction, same high quality valves as used in our battle tested Race Headers. Reduce weight through the elimination of side mufflers, reduce heat on the rear tires and under the decklid, no Drone, and 100% Lifetime Guarantee, including track use.\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003eAvailable in OEM lower flow tube size for stock muffler or 3\" lower flow tube size for use with Dundon Lifetime Mufflers\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3\" Lower Flow Path Offers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e44% improvement in flow over stock\u003c\/li\u003e\n\u003cli\u003e20% reduction in pressure drop over stock\u003c\/li\u003e\n\u003cli\u003eUse with Loud Muffler to have a bulletproof light weight track setup, with no drone\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse with Quiet Muffler to have a bulletproof light weight track setup for dB restricted tracks!\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"997\/991 GT3 3\" Valved Side Delete (with Dundon Muffler)","offer_id":10834104844324,"sku":"106-10007","price":2955.0,"currency_code":"USD","in_stock":true},{"title":"997\/991 GT3 OEM Valved Side Delete","offer_id":10834104877092,"sku":"106-10006","price":2955.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/gt3-347-side-muffler-deletes-for-997991-4510197.jpg?v=1761803552"},{"product_id":"gt3-muffler-adapter-kit-for-981","title":"GT3 Muffler Adapter Kit for 981","description":"\u003cp\u003eOur GT3 Muffler Adapter kit comes with everything you need to mount a GT3 muffler on your 981 except the muffler and tips!\u003c\/p\u003e\n\u003cp\u003eImprove the sound and performance of your 981 Boxster or Cayman with our GT3-style muffler adapter. In stock form, the 981 exhaust cannot handle the thermal load of a modified 3.8L GT4 engine, and can have big problems with heat-soak resulting in high oil and coolant temperatures. The larger 2.5\" tubing helps evacuate the exhaust gases to reduce heat soak and improve the performance of your engine while also providing a great sound upgrade!\u003c\/p\u003e\u003cp\u003eWith options to add sport catalytic converters and valves, you can add your choice of GT3-style muffler to round this package out. Whether it's a stock 997\/991 GT3\/RS center muffler, or a Dundon Lifetime Loud or Quiet muffler, this kit is compatible with all of them. Please reach out if you have specific fitment questions.\u003c\/p\u003e\u003cp\u003eThe kit is made with 2.5\" 321 Stainless Steel for a lifetime of trouble free use.\u003c\/p\u003e\u003cp\u003ePair with our \u003ca href=\"https:\/\/www.dundonmotorsports.com\/products\/981-gt4-spyder-race-headers-425hp\"\u003eGT4 Clubsport Headers\u003c\/a\u003e and a \u003ca href=\"https:\/\/www.dundonmotorsports.com\/products\/lifetime-center-muffler-5\"\u003e991 GT3 Muffler\u003c\/a\u003e for a complete exhaust upgrade.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2.5\" 321 Stainless over axle pipes\u003c\/li\u003e\n\u003cli\u003eGT3 Muffler Bracket \u0026amp; adapter\u003c\/li\u003e\n\u003cli\u003eGT3 Muffler Straps\u003c\/li\u003e\n\u003cli\u003eAll necessary hardware\u003c\/li\u003e\n\u003cli\u003eOptional high flow catalytic converters\u003c\/li\u003e\n\u003cli\u003eOptional valve sections (to retain Sport Exhaust functionality)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dundon Motorsports","offers":[{"title":"Manual \/ With Valves \/ With Sport Cats","offer_id":31647369461796,"sku":"100-30157","price":5965.0,"currency_code":"USD","in_stock":true},{"title":"Manual \/ Without Valves \/ Straight Pipes","offer_id":44179419693231,"sku":"100-30160","price":1498.0,"currency_code":"USD","in_stock":true},{"title":"PDK \/ With Valves \/ With Sport Cats","offer_id":31647369330724,"sku":"100-30161","price":5955.0,"currency_code":"USD","in_stock":true},{"title":"PDK \/ Without Valves \/ Straight Pipes","offer_id":44179419725999,"sku":"100-30164","price":1498.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/GT3-Muffler-Adapter-Kit-for-981-1x1.jpg?v=1789759135"},{"product_id":"gt4-carbon-fiber-gurney-flap","title":"981 GT4 Carbon Fiber Gurney Flap","description":"\u003cp\u003eDundon Motorsports is proud to offer a stunning and functional bit of aerodynamic aid for your GT4, a carbon fiber Gurney Flap. This allows for additional downforce with limited increase in drag. We offer the Gurney Flap in Gloss or Matte clear.\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Gloss Clear","offer_id":10834106089508,"sku":"981040A-A-GG00C-G","price":695.0,"currency_code":"USD","in_stock":true},{"title":"Matte Clear","offer_id":10834106155044,"sku":"981040A-A-GM00C-M","price":695.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/products\/gt4-carbon-fiber-gurney-flap-182159.jpg?v=1776093058"},{"product_id":"gt4-hardware-kit","title":"981 GT4 Header Hardware Kit","description":"\u003cp\u003e18 - Stainless Steel Studs\u003c\/p\u003e\n\u003cp\u003e18 - Serrated Flange Lock Nuts\u003c\/p\u003e\n\u003cp\u003e4 - 30mm long bolts\u003c\/p\u003e\n\u003cp\u003e4 - distorted flange lock nuts\u003c\/p\u003e\n\u003cp\u003e2 - 2.5\" v-band gaskets\u003c\/p\u003e\n\u003cp\u003e10 - Stainless Steel Conical Springs\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Default Title","offer_id":10834106253348,"sku":"101-10008","price":155.0,"currency_code":"USD","in_stock":true}]},{"product_id":"intake-runners-981991-3-8l","title":"981 GT4 \/ 991.1 Carrera S 3.8L Intake Runners","description":"\u003cp\u003eUsing science and engineering to increase performance is what we do. The Dundon 981\/991 3.8L Intake Runners are no exception. Through careful design of the intake runner geometry we were able to add 30+ peak wheel horsepower on top of our already potent race headers and tune. By extending the torque curve we increased power substantially all the way to redline, over 100whp gains at 7850rpm over both our headers\/tune and stock.\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Default Title","offer_id":10834107007012,"sku":"202-20001","price":3878.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/DMS-0283.jpg?v=1787159395"},{"product_id":"sub-belt-mount-991gt4","title":"Sub Belt Mount Set for Porsche 981\/991\/718\/992 Carbon Bucket Seats","description":"\u003cp\u003eDundon Sub-Belt Mount Set - For 981\/991\/718\/992 Bucket Seats\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eEnables the use of 6-point harnesses by providing an attachment point for the sub-belts.\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Default Title","offer_id":10834107662372,"sku":"701-20002","price":459.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/products\/sub-belt-mount-991gt4-331591.jpg?v=1619341420"},{"product_id":"991-1-991-2-gt3-gt3rs-911r-dual-reverse-cone-airbox-991-rs","title":"991 GT3RS Dual Reverse Cone Airbox for Stock Center Plenum","description":"\u003cul\u003e\n\u003cli\u003eDual Reverse Cone Airbox for 991 RS Stock Filter Area :1.77 sq ft\u003c\/li\u003e\n\u003cli\u003eReverse Dual Cone Filter Area: 6.25 sq ft\u003c\/li\u003e\n\u003cli\u003e353% more than stock.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dundon Motorsports","offers":[{"title":"Default Title","offer_id":10951119208484,"sku":"200-30029","price":4995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/image_f9b46b75-3feb-49f7-8d62-6f2dd1bd487f.png?v=1789767501"},{"product_id":"991-2-gt3-long-tube-street-header-exhaust-system","title":"991.2 GT3 Long Tube Street Header Exhaust System","description":"\u003cp\u003eDundon Street (Catted) tuned length headers and valved side delete exhaust system for the 991GT3 991 GT3RS and 911R are available now! *Muffler shown is not included with the system, only to see how the system goes together!!\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003eWe were able to keep all of the things that people love about our race headers:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eless weight\u003c\/li\u003e\n\u003cli\u003emore power,\u003c\/li\u003e\n\u003cli\u003egreat sound,\u003c\/li\u003e\n\u003cli\u003equiet when you want it to be\u003c\/li\u003e\n\u003cli\u003eno drone\u003c\/li\u003e\n\u003cli\u003elifetime structural warranty\u003c\/li\u003e\n\u003cli\u003e100% 30day money back guarantee\u003cul\u003e\u003cli\u003eif you try it and don't like it, send it back we'll give you your money back!\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eConvertible to no cats with the swappable test pipes for track days (available separately).\u003cbr\u003e \u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWe use 321SS (a superior grade of Stainless steel to the cheaper 304SS) and use a metal core spiral wound 200CPSI catalytic converter.  All our products are mfg in the USA in our shop in Gig Harbor, WA.\u003c\/p\u003e\u003cp\u003eBy routing the primaries up and positioning the catalytic converter more vertical we were able to retain 99% of the primary length of the race system. This is how we are able to achieve 25whp gains on the 991.2 GT3, 30whp gains on the 991.1 GT3 and 32whp on the 991.1GT3RS.  This is the most power from a catted 991.2 GT3,  991.1 GT3 Exhaust, 991.1 GT3RS Exhaust or 911R Exhaust system.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe Dundon Street Headers on 991.2 GT3\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e477whp Peak \u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e20-25whp gains at 8200-8500 rpm\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e40lbft-46lbft gains at 3000-5000 rpm\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eYou get everything you love about the Dundon Race Headers, 321 SS construction, industry leading power, lifetime structural warranty, and 100% money back guarantee, if you try it and don't like it, send it back we'll give you your money back!\u003cbr\u003e\u003cbr\u003eTo that end, see the dyno below!\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e991.2 GT3 Dundon Street (Catted) 477whp peak \u003c\/strong\u003e\u003c\/p\u003e\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/www.dundonmotorsports.com\/images\/content\/991_2%20GT3%206MT%20STOCK%20DYNO%20VS%20CATTED%20EXHAUST(1).jpg\" alt=\"\"\u003e\u003c\/figure\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eSome pics installed on the car, the street headers are only about 0.5\" shorter than our race headers. To fit everything we had to go up into the wheel well where the side mufflers sit. Only way to get the length required for real power gains...\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/products\/IMG_4325_9085b5c1-23f3-4db7-a973-55e8946c3d64_480x480.jpg?v=1579218490\" alt=\"\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003cbr\u003e\u003ci\u003eDundon 991 GT3\/RS showing length of primaries and routing required to fit the cat\u003c\/i\u003e\u003cbr\u003e \u003c\/p\u003e\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/products\/IMG_4317_480x480.jpg?v=1579218490\" alt=\"\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eAs you can see to get the length we wanted we had to go up, anything that can bolt up to the stock location is leaving power on the table...\u003cbr\u003e \u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"991.2 GT3 Long Tube Street Header Exhaust System - 2.5\" Outlet (For use with OEM muffler)","offer_id":46581272772783,"sku":"100-30022","price":9265.0,"currency_code":"USD","in_stock":true},{"title":"991.2 GT3 Long Tube Street Header Exhaust System - 3.0\" Outlet (For use with Dundon muffler)","offer_id":46581334442159,"sku":"100-30023","price":9265.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/9911-gt3-long-tube-street-header-exhaust-system-9568578.jpg?v=1761862553"},{"product_id":"991-1-gt3rs-and-911r-long-tube-street-header-exhaust-system","title":"991.1 GT3RS and 911R Long Tube Street Header Exhaust System","description":"\u003cp\u003eLess weight, more power, great sound, no drone, and no CEL. This is the Dundon Long Tube Street Header Exhaust.\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003eDundon Street (Catted) Long Tube header and valved side delete exhaust system for the 991 GT3RS and 911R are available now!  \u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eless weight\u003c\/li\u003e\n\u003cli\u003emore power,\u003c\/li\u003e\n\u003cli\u003egreat sound,\u003c\/li\u003e\n\u003cli\u003equiet when you want it to be\u003c\/li\u003e\n\u003cli\u003eno drone\u003c\/li\u003e\n\u003cli\u003elifetime structural warranty\u003c\/li\u003e\n\u003cli\u003eNo CEL\u003c\/li\u003e\n\u003cli\u003e100% 30day money back guarantee\u003cul\u003e\u003cli\u003eif you try it and don't like it, send it back we'll give you your money back).\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eWe use 321SS (a superior grade of Stainless steel to the cheaper 304SS) and use a metal core spiral wound 200CPSI catalytic converter.  All our products are made in the USA in our shop in Gig Harbor, WA.\u003c\/p\u003e\u003cp\u003eBy routing the primaries up and positioning the catalytic converter more vertical we were able to retain 99% of the primary length of the race system. This is how we are able to achieve 25whp gains on the 991.2 GT3, 30whp gains on the 991.1 GT3 and 32whp on the 991.1GT3RS.  This is the most power from a catted 991.2 GT3,  991.1 GT3 Exhaust, 991.1 GT3RS Exhaust or 911R Exhaust system.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eThe Dundon Street Headers on 991 GT3RS and 911R make\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e445whp Peak\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e32whp at 8400rpm\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e29lbft, 24whp gains at 4478rpm\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThe 991.1 GT3 and RS with the catted system shows it's emissions based camshaft tuning for about 5100-6000rpm area. This stock tuning flattens the power delivery for about 400rpms and then climbs quickly starting at 5400rpm. This is completely fixable with a tune, but understand that many will not want a tune.\u003cbr\u003e\u003cbr\u003eYou get everything you love about the Dundon Race Headers, 321 SS construction, industry leading power, lifetime structural warranty, and 100% money back guarantee, if you try it and don't like it, send it back we'll give you your money back!\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e991 GT3RS 911R Dundon Street (Catted) 445whp peak\u003c\/strong\u003e\u003cbr\u003e \u003c\/p\u003e\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/cimg9.ibsrv.net\/gimg\/rennlist.com-vbulletin\/1432x600\/80-dms_street_gt3rs_445whp_c9038c4192cbe3212ccf7303e1a346efb85f5eb3.jpg\" alt=\"\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003cbr\u003e\u003ci\u003e991 GT3RS Dundon Street (Catted) 445whp\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e991 GT3RS 911R Dundon Street (Catted\u003c\/strong\u003e\u003ci\u003e\u003cstrong\u003e) 29lbft and 24whp at 4478rpm\u003c\/strong\u003e\u003c\/i\u003e\u003cbr\u003e \u003c\/p\u003e\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/cimg4.ibsrv.net\/gimg\/rennlist.com-vbulletin\/1422x602\/80-dms_street_gt3rs_29wtq_24whp_7c7e875a1d9eb8ab685c99d50dfd7f8c0688afbb.jpg\" alt=\"\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003cbr\u003e\u003ci\u003e991 GT3RS Dundon Street (Catted) 29lbft and 24whp\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e991 GT3RS 911R Dundon Street (Catted\u003c\/strong\u003e\u003ci\u003e\u003cstrong\u003e) 32whp max gains\u003c\/strong\u003e\u003c\/i\u003e\u003cbr\u003e \u003c\/p\u003e\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/cimg0.ibsrv.net\/gimg\/rennlist.com-vbulletin\/1424x634\/80-dms_street_gt3rs_32whp_979039f8439fe90d9ecfbe8da76ab8cd3ef274f2.jpg\" alt=\"\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003cbr\u003e\u003ci\u003e991 GT3RS Street (Catted) 32whp max gains\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eThe Street Headers are only about 0.5\" shorter than our Race Headers. To fit everything we had to go up into the wheel well where the side mufflers sit. Only way to get the length required for real power gains...\u003cbr\u003e\u003cbr\u003eAs you can see to get the length we wanted we had to go up, anything that can bolt up to the stock location is leaving power on the table...\u003cbr\u003e\u003cbr\u003eVideo from the dyno so you can see and hear the awesomeness! You also get a good shot of how the headers are routed with the wheel off!\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/y6X8pTdubkQ\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"2.5\" Outlet (For use with OEM muffler)","offer_id":46581272740015,"sku":"100-30022","price":9265.0,"currency_code":"USD","in_stock":true},{"title":"3.0\" Outlet (For use with Dundon muffler)","offer_id":46581334409391,"sku":"100-30023","price":9265.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/9911-gt3-long-tube-street-header-exhaust-system-9568578.jpg?v=1761862553"},{"product_id":"991-2-gt3rs-long-tube-street-header-exhaust-system","title":"991.2 GT3RS Long Tube Street Header Exhaust System","description":"\u003cp\u003eDundon Street (Catted) tuned length headers and valved side delete exhaust system for the 991 GT3RS and 911R are available now! * Muffler shown is not included with the system, only to see how the system goes together!\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003eWe were able to keep all of the things that people love about our race headers:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eless weight\u003c\/li\u003e\n\u003cli\u003emore power,\u003c\/li\u003e\n\u003cli\u003egreat sound,\u003c\/li\u003e\n\u003cli\u003equiet when you want it to be\u003c\/li\u003e\n\u003cli\u003eno drone\u003c\/li\u003e\n\u003cli\u003elifetime structural warranty\u003c\/li\u003e\n\u003cli\u003e100% 30day money back guarantee\u003cul\u003e\u003cli\u003eif you try it and don't like it, send it back we'll give you your money back!\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eConvertible to no cats with the swappable test pipes for track days (available separately).\u003cbr\u003e \u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWe use 321SS (a superior grade of Stainless steel to the cheaper 304SS) and use an advanced  metal core catalyst with better mixing and less pressure drop than a typical 200CPSI catalytic converter.  All our products are mfg in the USA in our shop in Gig Harbor, WA.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eBy routing the primaries up and positioning the catalytic converter more vertical we were able to retain 99% of the primary length of the race system. This is how we are able to achieve 20whp max gains on the 991.2 GT3RS,   This is the most power from a catted 991.2 GT3RS  Exhaust system.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003cbr\u003eYou get great drone free sound with working valves, 321 SS construction, industry leading power, lifetime structural warranty, and 100% money back guarantee, if you try it and don't like it, send it back we'll give you your money back!\u003c\/p\u003e\u003cp\u003e \u003cbr\u003eSome pics installed on the car, the street headers are only about 0.5\" shorter than our race headers. To fit everything we had to go up into the wheel well where the side mufflers sit. Only way to get the length required for real power gains...\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eAnything that can bolt up to the stock location is leaving power on the table...\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003ci\u003eDundon 991 GT3\/RS Street \u003c\/i\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003ci\u003eDundon 991 GT3\/RS showing length of primaries and routing required to fit the cat\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/products\/IMG_4317_480x480.jpg?v=1579218490\" alt=\"\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eVideo from the dyno so you can see and hear the awesomeness! You also get a good shot of how the headers are routed with the wheel off!\u003cbr\u003e\u003cbr\u003e\u003ca href=\"https:\/\/youtu.be\/y6X8pTdubkQ\"\u003eDundon Street Headers on 991 GT3 - YouTube\u003c\/a\u003e\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"991.2 GT3RS Long Tube Street Header Exhaust System - 2.5\" Outlet (For use with OEM muffler)","offer_id":46581272838319,"sku":"100-30022","price":9265.0,"currency_code":"USD","in_stock":true},{"title":"991.2 GT3RS Long Tube Street Header Exhaust System - 3.0\" Outlet (For use with Dundon muffler)","offer_id":46581334376623,"sku":"100-30023","price":9265.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/9911-gt3-long-tube-street-header-exhaust-system-9568578.jpg?v=1761862553"},{"product_id":"93mm-throttle-body-center-plenum-kit","title":"991.2 GT3 Touring 93mm Throttle Body-Center Plenum Air Intake Kit","description":"\u003cp\u003eLet your 991.2 GT3 breathe with a larger 93mm Throttle Body and Center Plenum! Scroll down for more details.\u003c\/p\u003e\n\u003cp\u003eIn testing the 991.2 GT3 and RS we found the air intake to be restrictive.  With the addition of the larger 93mm Throttle Body and Center Plenum you can allow the car to breathe better.  We measure this by comparing the atmospheric pressure outside of the Plenum to the pressure inside the plenum. Ideally, we want no differences.  This change helps reduce pressure losses from about 0.6psi down to 0.1psi when used with our Dual Reverse Cone Airbox.\u003c\/p\u003e\u003cp\u003eKit Includes:\u003c\/p\u003e\u003cp\u003eBig Mouth Center Plenum\u003c\/p\u003e\u003cp\u003e93mm Throttle Body\u003c\/p\u003e\u003cp\u003eTouring Airbox Adapter\u003c\/p\u003e\u003cp\u003eAdapter Harness\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Default Title","offer_id":31566053015588,"sku":"200-30018","price":3965.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/products\/9912-gt3-touring-93mm-throttle-body-center-plenum-air-intake-kit-258449.jpg?v=1626998291"},{"product_id":"nurburgring-quiet-tips","title":"Nurburgring Quiet Tips","description":"\u003cp\u003eNeed to dial it back a little bit? Get a meatball flag at your last track day? Our Quiet Tips take the edge off for the sound meter, but not your car's performance!\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003eWith the unique design that doesn’t sacrifice looks, the Nurburgring quiet tips can manifest a decibel reduction between 5-7db.\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Dundon Lifetime GT3 Muffler","offer_id":31657338961956,"sku":"107-10009","price":905.0,"currency_code":"USD","in_stock":true},{"title":"OEM 997\/991 GT3\/GT3RS Muffler","offer_id":31657338994724,"sku":"107-10010","price":905.0,"currency_code":"USD","in_stock":true},{"title":"Dundon Titanium Ultralight GT3 Muffler","offer_id":42102203285679,"sku":"107-10015","price":1635.0,"currency_code":"USD","in_stock":true},{"title":"OEM 718 GT4\/GT4RS Muffler","offer_id":43371351343279,"sku":"107-10007","price":845.0,"currency_code":"USD","in_stock":true},{"title":"Dundon V11 GT4\/GT4RS Muffler","offer_id":43371351900335,"sku":"107-10008","price":845.0,"currency_code":"USD","in_stock":true},{"title":"OEM 992 GT3\/RS Muffler","offer_id":44265056141487,"sku":"107-10014","price":905.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/DMS-0018.jpg?v=1785955371"},{"product_id":"997-gt3-intake-plenum","title":"Resonance Air Intake Plenum w\/ 93mm Throttle Body 997.1 GT3\/GT3RS","description":"\u003cp\u003eDo you want more power for your Porsche? The Dundon 997 Resonance Intake Manifold is the perfect way to add some extra horsepower to your car. Our intake manifold will increase engine performance and give you a smoother, quicker acceleration. It's also designed with a larger throttle body that helps lower resistance while still maintaining the same air flow. Check below for all the details.\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"With Cobb Accessport and Dundon Pro Tune","offer_id":44816214786223,"sku":"200-30009","price":11505.0,"currency_code":"USD","in_stock":true},{"title":"Without Cobb Accessport and Dundon Pro Tune","offer_id":44816214818991,"sku":"200-30005","price":9515.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/products\/997-gt3-resonance-air-intake-plenum-w-100mm-throttle-body-594882.jpg?v=1626998286"},{"product_id":"997-1-gt3rs-long-tube-street-header-exhaust-system","title":"997.1 GT3RS Long Tube Street Header Exhaust System","description":"\u003cp\u003eDundon Street (Catted) tuned length headers and valved side delete exhaust system for the 997.1 GT3 and GT3RS are available now! We were able to keep all of the things that people love about our race headers; keep scrolling! *V2.0 Headers shown - Updated 2021\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThe Dundon 997 GT3\/RS Long Tube Street Header Exhaust System\u003c\/strong\u003e\u003cbr\u003e \u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eless weight\u003c\/li\u003e\n\u003cli\u003emore power,\u003c\/li\u003e\n\u003cli\u003egreat sound,\u003c\/li\u003e\n\u003cli\u003equiet when you want it to be\u003c\/li\u003e\n\u003cli\u003eno drone\u003c\/li\u003e\n\u003cli\u003elifetime structural warranty\u003c\/li\u003e\n\u003cli\u003e100% 30day money back guarantee\u003cul\u003e\u003cli\u003eif you try it and don't like it, send it back we'll give you your money back!\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eConvertible to no cats with the swappable test pipes for track days (available separately).\u003cbr\u003e \u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWe use 321SS (a superior grade of Stainless steel to the cheaper 304SS) and use a metal core spiral wound 200CPSI catalytic converter.  All our products are manufactured in the USA in our shop in Gig Harbor, WA.\u003c\/p\u003e\u003cp\u003eBy routing the primaries up and positioning the catalytic converter more vertical we were able to retain 99% of the primary length of the race system. This is how we are able to achieve 25whp gains on the 997.1 GT3\/RS\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"2.5\" (for OEM Muffler)","offer_id":46581273198767,"sku":"100-30098","price":8810.0,"currency_code":"USD","in_stock":true},{"title":"3.0\" (for Dundon Muffler)","offer_id":46581334311087,"sku":"100-30099","price":8810.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/997.1-2_GT3_Long_Tube_Street_Header_Exhaust_System-2.jpg?v=1762465475"},{"product_id":"997-2-gt3-long-tube-street-header-exhaust-system","title":"997.2 GT3 Long Tube Street Header Exhaust System","description":"\u003cp\u003eDundon Street (Catted) tuned length headers and valved side delete exhaust system for the 997.2 GT3 are available now! We were able to keep all of the things that people love about our race headers: scroll down to learn more! *V2.0 Headers shown - Updated 2021\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThe Dundon 997.2 GT3 Long Tube Street Header Exhaust System\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eless weight\u003c\/li\u003e\n\u003cli\u003emore power,\u003c\/li\u003e\n\u003cli\u003egreat sound,\u003c\/li\u003e\n\u003cli\u003equiet when you want it to be\u003c\/li\u003e\n\u003cli\u003eno drone\u003c\/li\u003e\n\u003cli\u003elifetime structural warranty\u003c\/li\u003e\n\u003cli\u003e100% 30day money back guarantee\u003cul\u003e\u003cli\u003eif you try it and don't like it, send it back we'll give you your money back!\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eConvertible to no cats with the swappable test pipes for track days (available separately).\u003cbr\u003e \u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWe use 321SS (a superior grade of Stainless steel to the cheaper 304SS) and use a metal core spiral wound 200CPSI catalytic converter.  All our products are mfg in the USA in our shop in Gig Harbor, WA.\u003c\/p\u003e\u003cp\u003eBy routing the primaries up and positioning the catalytic converter more vertical we were able to retain 99% of the primary length of the race system. This is how we are able to achieve 27whp gains on the 997.2 GT3\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"2.5\" (for OEM Muffler)","offer_id":46581273264303,"sku":"100-30098","price":8810.0,"currency_code":"USD","in_stock":true},{"title":"3.0\" (for Dundon Muffler)","offer_id":46581334278319,"sku":"100-30099","price":8810.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/9972-gt3-long-tube-street-header-exhaust-system-1735383.jpg?v=1762300576"},{"product_id":"997-2-gt3-rs-dual-cone-single-opening-carbon-fiber-airbox","title":"997.2 GT3 Dual Cone Carbon Fiber Airbox","description":"\u003cp\u003eFree up power and add some beauty to your engine bay with the Dundon Motorsports Carbon Fiber Dual Cone Airbox. On a stock car this airbox will free up about 5-7whp. On a Dundon Resonance Intake equipped car, this airbox is good for about 8-10 whp!\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003eWe based this design on the fabled 997 4.0L GT3RS.  It features dual conical air filters from the 4.0RS.  In order for you to keep your stock decklid we created a balance pipe in the bottom area of the airbox to allow air to flow to both filters equally.\u003c\/p\u003e\n\u003cp\u003eNote Fan Part 997.624.056.05 is required for fitment on cars with the original fan (most of them have been replaced by 997.624.056.05 by now...)  If you need to source it or are unsure, you can order our option that includes a new fan slim line decklid fan from Porsche\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003eWe based this design on the fabled 997 4.0L GT3RS.  It features dual conical air filters from the 4.0RS.  In order for you to keep your stock decklid we created a balance pipe in the bottom area of the airbox to allow air to flow to both filters equally.\u003c\/p\u003e\u003cp\u003eNote Fan Part 997.624.056.05 is required for fitment on cars with the original fan (most of them have been replaced by 997.624.056.05 by now...)  If you need to source it or are unsure, you can order our option that includes a new fan slim line decklid fan from Porsche\u003c\/p\u003e\u003cp\u003eBelow is the OE fan the car came with.\u003c\/p\u003e\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/ThickFan_480x480.jpg?v=1582135999\" alt=\"Thick Fan\"\u003e\u003c\/figure\u003e\u003cp\u003eBelow is the upgraded thin line fan:\u003c\/p\u003e\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/ThinFan_480x480.jpg?v=1582136039\" alt=\"Thin Fan\"\u003e\u003c\/figure\u003e","brand":"Dundon Motorsports","offers":[{"title":"Default Title","offer_id":12058379583524,"sku":"200-30027","price":3195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/products\/9972-gt3rs-dual-cone-single-opening-carbon-fiber-air-intake-750358.jpg?v=1627084862"},{"product_id":"991-2-gt3-dual-reverse-cone-airbox-for-93mm-throttle-body-and-dundon-center-plenum","title":"Intake Kit: Dual Cone Airbox, 93mm Throttle Body, Dundon Center Plenum (991.2 GT3)","description":"\u003cp\u003eLet your 991.2 GT3 breathe. Our full intake kit replaces the restrictive factory airbox and 82mm throttle body with the Dundon Dual Reverse Cone Airbox, Dundon Center Plenum and 93mm throttle body: more air flow, more capacity, and more of that intake sound.\u003c\/p\u003e\n\u003cp\u003eIn testing the 991.2 GT3 and RS we found the air intake to be restrictive. The airbox is shared with the 991.1 Carrera S, and the 82mm throttle body has been the same since the 996 GT3. Neither of those is a 500 hp car. We measure the restriction by comparing atmospheric pressure outside the plenum to the pressure inside. Ideally there is no difference. This kit reduces pressure losses from about 0.6 psi to 0.1 psi.\u003c\/p\u003e\n\u003cp\u003eBy reducing the pressure losses in the intake and allowing a more free flow into the engine, the engine makes power two ways. First, less engine power is used overcoming the parasitic losses of the stock intake tract. Second, we're able to get more high-pressure air to the intake valve to cram more air into the cylinder. Both translate into more power, and on a car that uses ram air to its advantage (scoops on the decklid), the gains are more than can be measured on a static dyno.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKit includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDundon Dual Reverse Cone Airbox: 4.96 sq ft of filter area versus 1.77 sq ft stock, 280% more, so air moves more slowly through the filters with less pressure drop across the element\u003c\/li\u003e\n\u003cli\u003eDundon Center Plenum\u003c\/li\u003e\n\u003cli\u003e93mm throttle body, 28.6% more area than the factory 82mm unit, with adapter harness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOn a car already running our Street Headers, the intake kit adds roughly 10 to 15 whp and up to 10 lb-ft at the wheels. Headers and intake together make up our 991.2 GT3 D3 Power Package: up to 47 lb-ft and 38 whp on PDK cars, 53 lb-ft and 31 whp on manuals, with peak output over 473 whp.\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Default Title","offer_id":12108077793316,"sku":"200-30002","price":8995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/Intake-Kit-Dual-Cone-Airbox-93mm-Throttle-Body-Dundon-Center-Plenum-991--1x1.jpg?v=1789759177"},{"product_id":"991-2-oem-gt3-touring-airbox-for-991-1-gt3-airbox","title":"991.2 OEM GT3 Touring Air Intake for 991.1 GT3 and 911R","description":"\u003cp\u003eA bolt in Dual Cone intake for your 991.1 GT3 and 911R!\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Default Title","offer_id":12264185954340,"sku":"205-991-110-022-99","price":5995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/991-2-OEM-GT3-Touring-Air-Intake-for-991-1-GT3-and-911R-1x1.jpg?v=1789768083"},{"product_id":"991-2-gt3-touring-long-tube-street-header-exhaust-system","title":"991.2 GT3 Touring Long Tube Street Header Exhaust System","description":"\u003cp\u003eAchieve 50lbft and almost 20whp gains on your 991.2 GT3 Touring with our Long Tube Street Header Exhaust System.\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003e* Muffler shown is not included with the system, only to see how the system goes together!\u003cbr\u003e \u003c\/p\u003e \u003cul\u003e\n\u003cli\u003eless weight\u003c\/li\u003e\n\u003cli\u003emore power\u003c\/li\u003e\n\u003cli\u003egreat sound\u003c\/li\u003e\n\u003cli\u003equiet when you want it to be\u003c\/li\u003e\n\u003cli\u003eno drone\u003c\/li\u003e\n\u003cli\u003elifetime structural warranty\u003c\/li\u003e\n\u003cli\u003e100% 30day money back guarantee\u003cul\u003e\u003cli\u003eif you try it and don't like it, send it back we'll give you your money back!\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWe use 321SS (a superior grade of Stainless steel to the cheaper 304SS) and use a metal core 200CPSI catalytic converter.  All our products are manufactured in the USA in our shop in Gig Harbor, WA.\u003c\/p\u003e\u003cp\u003eBy routing the primaries up and positioning the catalytic converter more vertical we were able to retain 99% of the primary length of the race system. This is how we are able to achieve 50lbft and almost 20whp gains on the 991.2 GT3 Touring with it's known intake restrictions \u003c\/p\u003e\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/991_2_GT3_Touring_Street_Headers_480x480.jpg?v=1568738511\" alt=\"\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003cbr\u003e\u003cbr\u003e \u003c\/p\u003e\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/products\/IMG_4317_480x480.jpg?v=1579218490\" alt=\"\"\u003e\u003c\/figure\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/y6X8pTdubkQ\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"991.2 GT3 Touring Long Tube Street Header Exhaust System - 2.5\" Outlet (For use with OEM muffler)","offer_id":46581272805551,"sku":"100-30022","price":9265.0,"currency_code":"USD","in_stock":true},{"title":"991.2 GT3 Touring Long Tube Street Headers Exhaust System - 3.0\" Outlet","offer_id":46581334245551,"sku":"100-30023","price":9265.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/9911-gt3-long-tube-street-header-exhaust-system-9568578.jpg?v=1761862553"},{"product_id":"d2-street-bundle","title":"Street Header\/Lifetime Muffler Power Package (2007-2008 997.1 GT3)","description":"\u003cp\u003eAdd Power and great sound and experience your Porsche's true capabilities with the Dundon Power Package. Intentionally designed to bring big power with and distinct sound we all love, this kit is perfectly tailored to add more muscle, better sound, and increased performance to your specific GT car.\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003ePackage Includes:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStreet Headers\u003c\/li\u003e\n\u003cli\u003eLifetime Muffler\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dundon Motorsports","offers":[{"title":"Loud Muffler PVD Black Tips","offer_id":46581273100463,"sku":"100-30043","price":14435.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler PVD Black Tips","offer_id":46581334081711,"sku":"100-30045","price":14435.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler Ti Tips","offer_id":46581334114479,"sku":"100-30044","price":15200.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler Ti Tips","offer_id":46581334147247,"sku":"100-30046","price":15200.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud)","offer_id":46581334180015,"sku":"100-30047","price":21420.0,"currency_code":"USD","in_stock":true},{"title":"Inconel Mini Crack Pipe","offer_id":46581334212783,"sku":"100-30049","price":17540.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/street-headerlifetime-muffler-power-package-2007-2008-9971-gt3-4428819.jpg?v=1762632673"},{"product_id":"d3-street-bundle","title":"D3 Street Header\/93mm Intake Kit\/Optional Lifetime Muffler Power Package (2014-2016 991.1 GT3)","description":"\u003cp\u003eAdd Power and great sound and experience your Porsche’s true capabilities with the Dundon Power Package. Intentionally designed to bring big power with and distinct sound we all love, this kit is perfectly tailored to add more muscle, better sound, and increased performance to your specific GT car.\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003e38lbft and 50whp gains (with Race Headers)\u003c\/p\u003e\n\u003cp\u003eIncludes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStreet Headers\u003c\/li\u003e\n\u003cli\u003eOEM Touring Airbox\u003c\/li\u003e\n\u003cli\u003e93mm TB\/Center Plenum\u003c\/li\u003e\n\u003cli\u003eOptional Lifetime Muffler\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOnly Race Header\/Lifetime Muffler\/ Touring Airbox\/ 93mm Center Plenum Dyno available.\u003c\/p\u003e\n\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/1_991.1_stock_vs_race_loud_93TB_Touring_Air_Box_MAX_480x480.png?v=1579224310\" alt=\"\"\u003e\u003c\/figure\u003e\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/products\/sslremote.php_480x480.jpg?v=1579222923\" alt=\"\"\u003e\u003c\/figure\u003e","brand":"Dundon Motorsports","offers":[{"title":"No Muffler","offer_id":31641800474660,"sku":"100-30206","price":18465.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler (3.0\" Outlet) PVD Black Tips","offer_id":31641800507428,"sku":"100-30198","price":24095.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler (3.0\" Outlet) PVD Black Tips","offer_id":31641800540196,"sku":"100-30200","price":24095.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler (3.0\" Outlet) Ti Tips","offer_id":31641800572964,"sku":"100-30199","price":24855.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler (3.0\" Outlet) Ti Tips","offer_id":31641800605732,"sku":"100-30201","price":24855.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud)","offer_id":42295638982831,"sku":"100-30202","price":31075.0,"currency_code":"USD","in_stock":true},{"title":"Inconel Mini Crack Pipe","offer_id":42295639113903,"sku":"100-30204","price":27195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/d3-street-header93mm-intake-kitoptional-lifetime-muffler-power-package-2014-2016-9911-gt3-3946096.jpg?v=1761720813"},{"product_id":"d4-street-bundle-2007-2008-997-1-gt3-rs","title":"D4 Street Power Package (2007-2008 997.1 GT3\/GT3RS)","description":"\u003cp\u003eAdd Power and great sound and experience your Porsche's true capabilities with the Dundon Power Package. Intentionally designed to bring big power with and distinct sound we all love, this kit is perfectly tailored to add more muscle, better sound, and increased performance to your specific GT car. CAUTION! If your engine is in poor health, this Power Package will expose any issues lurking within. We recommend installing these kits on healthy engines only. No returns for any issues caused by an engine in poor condition. Compression and Leak Down testing prior to install is recommended!\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003ePackage Includes:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStreet Headers (w\/ cats)\u003c\/li\u003e\n\u003cli\u003eCobb AP w\/ Pro Tune\u003c\/li\u003e\n\u003cli\u003eDundon Resonance Intake Manifold w\/ 100mm Throttle Body\u003cbr\u003e \u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe Dundon Street headers by itself give a huge improvement to performance and the overall sound of the system, combined with the Cobb AP Pro Tune this will bring an even bigger improvement in the performance all around but especially in the mid range. This performance increase is even further optimized with the increased air volume with the engineered Dundon Resonance Intake Manifold with a larger throttle body of 100mm, exponentially bigger compared to stock 82mm.\u003c\/p\u003e\u003cp\u003eBase package is fantastic as is, but we would all like better! This package comes with even more optimizing options.\u003c\/p\u003e\u003cp\u003eOptional Items\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDundon Lifetime Muffler (Quiet or Loud, your choice of tips)\u003c\/li\u003e\n\u003cli\u003eDundon Dual Cone Carbon Fiber Air Intake\u003cbr\u003e \u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe optional items are all about giving your vehicle that little push of improvement that can separate yourself from others.\u003c\/p\u003e\u003cp\u003eOur lifetime mufflers are all about well… longevity! A lifetime guarantee even including track use allows you to have worry free use while giving you two different sounds depending on your preference. The Quiet is for those customers looking for no drone* while cruising and to quiet the car at full boogie to attenuate some of the dB levels on the track or on the street.  The Loud is the muffler for those looking for no drone* at cruise, but a pronounced bark when getting on it!\u003c\/p\u003e\u003cp\u003eThe two two tip options are all about what flavor of sound you're looking for!\u003c\/p\u003e\u003cp\u003eNot to sell you too much, but remember that intake system included with the package? The one with the huge throttle body? Well optimize that size with the lighter and larger carbon fiber airbox! Just with the headers you can see an increase of 8-10 whp.\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Lifetime Muffler - Loud \/ Exhaust Tips - Titanium \/ None (Use OEM Airbox)","offer_id":39264046710959,"sku":"100-30109","price":25855.0,"currency_code":"USD","in_stock":true},{"title":"Lifetime Muffler - Loud \/ Exhaust Tips - Titanium \/ Dundon Dual Cone Carbon Airbox","offer_id":39264046743727,"sku":"100-30110","price":29345.0,"currency_code":"USD","in_stock":true},{"title":"Lifetime Muffler - Loud \/ Exhaust Tips - PVD Black \/ None (Use OEM Airbox)","offer_id":39264046776495,"sku":"100-30107","price":25085.0,"currency_code":"USD","in_stock":true},{"title":"Lifetime Muffler - Loud \/ Exhaust Tips - PVD Black \/ Dundon Dual Cone Carbon Airbox","offer_id":39264046809263,"sku":"100-30108","price":28585.0,"currency_code":"USD","in_stock":true},{"title":"Lifetime Muffler - Quiet \/ Exhaust Tips - Titanium \/ None (Use OEM Airbox)","offer_id":39264046842031,"sku":"100-30113","price":25855.0,"currency_code":"USD","in_stock":true},{"title":"Lifetime Muffler - Quiet \/ Exhaust Tips - Titanium \/ Dundon Dual Cone Carbon Airbox","offer_id":39264046874799,"sku":"100-30114","price":29345.0,"currency_code":"USD","in_stock":true},{"title":"Lifetime Muffler - Quiet \/ Exhaust Tips - PVD Black \/ None (Use OEM Airbox)","offer_id":39264046907567,"sku":"100-30111","price":25085.0,"currency_code":"USD","in_stock":true},{"title":"Lifetime Muffler - Quiet \/ Exhaust Tips - PVD Black \/ Dundon Dual Cone Carbon Airbox","offer_id":39264046940335,"sku":"100-30112","price":28585.0,"currency_code":"USD","in_stock":true},{"title":"None (Use OEM Muffler) \/ None \/ None (Use OEM Airbox)","offer_id":39264046973103,"sku":"100-30121","price":19465.0,"currency_code":"USD","in_stock":true},{"title":"None (Use OEM Muffler) \/ None \/ Dundon Dual Cone Carbon Airbox","offer_id":39264047005871,"sku":"100-30122","price":22955.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud) \/ Exhaust Tips - Titanium \/ None (Use OEM Airbox)","offer_id":42295659856047,"sku":"100-30115","price":32075.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud) \/ Exhaust Tips - Titanium \/ Dundon Dual Cone Carbon Airbox","offer_id":42295659888815,"sku":"100-30116","price":35565.0,"currency_code":"USD","in_stock":true},{"title":"Inconel Mini Crack Pipe \/ None \/ None (Use OEM Airbox)","offer_id":42295659921583,"sku":"100-30119","price":28195.0,"currency_code":"USD","in_stock":true},{"title":"Inconel Mini Crack Pipe \/ None \/ Dundon Dual Cone Carbon Airbox","offer_id":42295659954351,"sku":"100-30120","price":31685.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/d4-street-power-package-2007-2008-9971-gt3gt3rs-8095047.jpg?v=1761803554"},{"product_id":"d2-street-bundle-2014-2016-991-1-gt3","title":"Street Header\/Lifetime Muffler Power Package (2014-2016 991.1 GT3)","description":"\u003cp\u003e\u003cstrong\u003eOur Most Popular Package. Street Headers and Lifetime Muffler!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDundon Street (Catted) tuned length headers and valved side delete exhaust system for the 991.1 GT3! We were able to keep all of the things that people love about our race headers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eless weight\u003c\/li\u003e\n\u003cli\u003emore power,\u003c\/li\u003e\n\u003cli\u003egreat sound,\u003c\/li\u003e\n\u003cli\u003equiet when you want it to be\u003c\/li\u003e\n\u003cli\u003eno drone\u003c\/li\u003e\n\u003cli\u003elifetime structural warranty\u003c\/li\u003e\n\u003cli\u003e100% 30day money back guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eif you try it and don't like it, send it back we'll give you your money back!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe use 321SS (a superior grade of Stainless steel to the cheaper 304SS) and use a metal core spiral wound 200CPSI catalytic converter. All our products are mfg in the USA in our shop in Gig Harbor, WA.\u003c\/p\u003e\n\u003cp\u003eBy routing the primaries up and positioning the catalytic converter more vertical we were able to retain 99% of the primary length of the race system. This is how we are able to achieve 25whp gains on the 991.1 GT3.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eYou get everything you love about the Dundon Race Headers; 321 SS construction, industry leading power, lifetime structural warranty, and 100% money back guarantee, if you try it and don't like it, send it back we'll give you your money back!\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Loud Muffler PVD Black Tips","offer_id":46581272871087,"sku":"100-30024","price":14890.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler PVD Black Tips","offer_id":46581333917871,"sku":"100-30026","price":14890.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler Ti Tips","offer_id":46581333950639,"sku":"100-30025","price":15655.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler Ti Tips","offer_id":46581333983407,"sku":"100-30027","price":15655.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud)","offer_id":46581334016175,"sku":"100-30028","price":21875.0,"currency_code":"USD","in_stock":true},{"title":"Inconel Mini Crack Pipe","offer_id":46581334048943,"sku":"100-30030","price":17995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/street-headerlifetime-muffler-power-package-2014-2016-9911-gt3-6790657.jpg?v=1761720812"},{"product_id":"d2-street-bundle-2018-2019-991-2-touring","title":"Street Header\/Lifetime Muffler Power Package (2018-2019 991.2 Touring)","description":"\u003cp\u003eGet the Porsche Flat Six wail you been craving. Dundon Street Headers and Lifetime Muffler keep all the things you love about your Touring and adds some excitement with 40lbft below 5000rpm and 20+whp at 8200rpm! Remove restrictions and experience your Porsche's true capabilities with the Dundon Power Package. Intentionally designed to bring big power with that renowned RSR tune we all love, this kit is perfectly tailored to add more muscle, better sound, and increased performance to your specific GT car.\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Loud Muffler PVD Black Tips","offer_id":46581272969391,"sku":"100-30024","price":14890.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler PVD Black Tips","offer_id":46581333786799,"sku":"100-30026","price":14890.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler Ti Tips","offer_id":46581333819567,"sku":"100-30025","price":15655.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler Ti Tips","offer_id":46581333852335,"sku":"100-30027","price":15655.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud)","offer_id":46581333885103,"sku":"100-30028","price":21875.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/street-headerlifetime-muffler-power-package-2018-2019-9912-touring-3193597.jpg?v=1761886388"},{"product_id":"d3-street-bundle-2018-2019-991-2-touring","title":"D3 Street Header\/93mm Intake Kit\/Optional Lifetime Muffler Power Package (2018-2019 991.2 Touring)","description":"53lbft and 31whp gains. The Dundon Power Package for 991.2 GT3 Touring includes: Dundon 321Stainless Long Tube Street Headers, 93mm Center Plenum and 93mm, Throttle Body Kit, and optional Lifetime Muffler.\u003cp\u003eWe work on helping the naturally aspirated GT cars find power. The Touring was a particular challenge due to the lack of ram air.\u003cbr\u003e\u003cbr\u003ePorsche recognized this fact and gave the Touring a different airbox from the Winged GT3 (doesn't fit on the winged GT3, knew you were gonna ask... ;)\u003cbr\u003e\u003cbr\u003e991.2 GT3 (clubblau)  with Street Headers, Loud muffler and 93mm Intake kit Installed with youtuber CarswithLuke!\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cblockquote data-instgrm-captioned data-instgrm-permalink=\"https:\/\/www.instagram.com\/p\/B5qZ4yFp-y-\/?utm_source=ig_embed\u0026amp;utm_campaign=loading\" data-instgrm-version=\"13\"\u003e \u003ca href=\"https:\/\/www.instagram.com\/p\/B5qZ4yFp-y-\/?utm_source=ig_embed\u0026amp;utm_campaign=loading\" target=\"_blank\"\u003e      \u003csvg width=\"50px\" height=\"50px\" viewbox=\"0 0 60 60\" version=\"1.1\" xmlns=\"https:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"https:\/\/www.w3.org\/1999\/xlink\"\u003e\u003cg stroke=\"none\" stroke-width=\"1\" fill=\"none\" fill-rule=\"evenodd\"\u003e\u003cg transform=\"translate(-511.000000, -20.000000)\" fill=\"#000000\"\u003e\u003cg\u003e\u003cpath d=\"M556.869,30.41 C554.814,30.41 553.148,32.076 553.148,34.131 C553.148,36.186 554.814,37.852 556.869,37.852 C558.924,37.852 560.59,36.186 560.59,34.131 C560.59,32.076 558.924,30.41 556.869,30.41 M541,60.657 C535.114,60.657 530.342,55.887 530.342,50 C530.342,44.114 535.114,39.342 541,39.342 C546.887,39.342 551.658,44.114 551.658,50 C551.658,55.887 546.887,60.657 541,60.657 M541,33.886 C532.1,33.886 524.886,41.1 524.886,50 C524.886,58.899 532.1,66.113 541,66.113 C549.9,66.113 557.115,58.899 557.115,50 C557.115,41.1 549.9,33.886 541,33.886 M565.378,62.101 C565.244,65.022 564.756,66.606 564.346,67.663 C563.803,69.06 563.154,70.057 562.106,71.106 C561.058,72.155 560.06,72.803 558.662,73.347 C557.607,73.757 556.021,74.244 553.102,74.378 C549.944,74.521 548.997,74.552 541,74.552 C533.003,74.552 532.056,74.521 528.898,74.378 C525.979,74.244 524.393,73.757 523.338,73.347 C521.94,72.803 520.942,72.155 519.894,71.106 C518.846,70.057 518.197,69.06 517.654,67.663 C517.244,66.606 516.755,65.022 516.623,62.101 C516.479,58.943 516.448,57.996 516.448,50 C516.448,42.003 516.479,41.056 516.623,37.899 C516.755,34.978 517.244,33.391 517.654,32.338 C518.197,30.938 518.846,29.942 519.894,28.894 C520.942,27.846 521.94,27.196 523.338,26.654 C524.393,26.244 525.979,25.756 528.898,25.623 C532.057,25.479 533.004,25.448 541,25.448 C548.997,25.448 549.943,25.479 553.102,25.623 C556.021,25.756 557.607,26.244 558.662,26.654 C560.06,27.196 561.058,27.846 562.106,28.894 C563.154,29.942 563.803,30.938 564.346,32.338 C564.756,33.391 565.244,34.978 565.378,37.899 C565.522,41.056 565.552,42.003 565.552,50 C565.552,57.996 565.522,58.943 565.378,62.101 M570.82,37.631 C570.674,34.438 570.167,32.258 569.425,30.349 C568.659,28.377 567.633,26.702 565.965,25.035 C564.297,23.368 562.623,22.342 560.652,21.575 C558.743,20.834 556.562,20.326 553.369,20.18 C550.169,20.033 549.148,20 541,20 C532.853,20 531.831,20.033 528.631,20.18 C525.438,20.326 523.257,20.834 521.349,21.575 C519.376,22.342 517.703,23.368 516.035,25.035 C514.368,26.702 513.342,28.377 512.574,30.349 C511.834,32.258 511.326,34.438 511.181,37.631 C511.035,40.831 511,41.851 511,50 C511,58.147 511.035,59.17 511.181,62.369 C511.326,65.562 511.834,67.743 512.574,69.651 C513.342,71.625 514.368,73.296 516.035,74.965 C517.703,76.634 519.376,77.658 521.349,78.425 C523.257,79.167 525.438,79.673 528.631,79.82 C531.831,79.965 532.853,80.001 541,80.001 C549.148,80.001 550.169,79.965 553.369,79.82 C556.562,79.673 558.743,79.167 560.652,78.425 C562.623,77.658 564.297,76.634 565.965,74.965 C567.633,73.296 568.659,71.625 569.425,69.651 C570.167,67.743 570.674,65.562 570.82,62.369 C570.966,59.17 571,58.147 571,50 C571,41.851 570.966,40.831 570.82,37.631\"\u003e\u003c\/path\u003e\u003c\/g\u003e\u003c\/g\u003e\u003c\/g\u003e\u003c\/svg\u003e  View this post on Instagram            \u003c\/a\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.instagram.com\/p\/B5qZ4yFp-y-\/?utm_source=ig_embed\u0026amp;utm_campaign=loading\" target=\"_blank\"\u003eA post shared by Hope 🚙 \u0026amp; Tom🧔🏻 (@clubblau)\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e \u003cscript async src=\"\/\/www.instagram.com\/embed.js\"\u003e\u003c\/script\u003e\u003cp\u003eSo we went about finding power on the Touring...\u003c\/p\u003e\u003cfigure\u003e\u003cimg src=\"https:\/\/cimg0.ibsrv.net\/gimg\/rennlist.com-vbulletin\/1920x1080\/baseline_vs_catted_93_tb_stock_airbox_all_runs_2_ed56b062d87200a067e2780becba355311022237.png\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003cbr\u003e\u003ci\u003e991.2 GT3 Touring, Street Headers, Lifetime Muffler and 93mmTB\/Center Plenum with Touring Airbox adapter\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003eThe kit is pretty simple, Street Headers and our 93mm TB and Center Plenum with an adapter for the Stock Touring Airbox. We tested vs our airbox and ours is better, but only from 7000 rpm up and only 6-8 whp, if we had better ram air like on the RS or Winged GT3 we would want our airbox in there for sure. As we work to further improve the power of these wonderful cars (and there is more coming...), our airbox will likely be needed but for now, the benefit isn't worth the expense in our opinion. Let's get some testing done and get some of you some POWER!\u003c\/p\u003e\u003cp\u003eReal World Results:\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eTemps and altitude also come into play for these results...\u003cbr\u003e\u003cbr\u003eGT3 (GT3 Touring Frog) was the first up with data before 60-130 times with just race headers.\u003c\/p\u003e\u003cfigure\u003e\u003cimg src=\"https:\/\/cimg4.ibsrv.net\/gimg\/rennlist.com-vbulletin\/920x2000\/gt3touringfrogbefore_9_52_9bb826e2f0f6dc51181d53abf36ebb65f538da2d.jpg\" alt=\"\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003cbr\u003e\u003ci\u003eBefore 93mm Plenum and Throttle Body Kit\u003c\/i\u003e\u003cbr\u003e\u003c\/p\u003e\u003cfigure\u003e\u003cimg src=\"https:\/\/cimg9.ibsrv.net\/gimg\/rennlist.com-vbulletin\/920x2000\/gt3touringfrogafter_8_57_c1c95ebe34b7aced93d1c5a030f328893febc451.jpg\" alt=\"\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003cbr\u003e\u003ci\u003eAfter 93mm Center Plenum and Throttle Body Kit\u003c\/i\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003eA Before of 9.52 seconds and after of 8.57 seconds shows the car really likes the extra air!\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eNext up was local customer Francis with his 991.2 GT3 Touring. Car came to us with valved side deletes so had already lost 40lbs, but no power gains, and went with the Street Header Power Package. Francis was also kind enough to make some nice videos...\u003cbr\u003e\u003cbr\u003eAt the Drags in Bremerton Washington:\u003c\/p\u003e\u003cp\u003eHis Dragy Sheets\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e1\/4 Mile Before (no Launch control)\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\u003cfigure\u003e\u003cimg src=\"https:\/\/cimg5.ibsrv.net\/gimg\/rennlist.com-vbulletin\/920x2000\/1_4_mile_before_12_54_at_121_mph_4d4c81b8fa739720a6fab6be222ea5a4abbb55c4.png\" alt=\"\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003cbr\u003e\u003ci\u003e1\/4 Mile Before 991.2 GT3 Touring, No Launch Control\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e1\/4 Mile After Dundon Street Headers and 93mm Throttle Body Kit, 991.2 GT3 Touring Manual No Launch Control\u003cbr\u003e\u003c\/p\u003e\u003cfigure\u003e\u003cimg src=\"https:\/\/cimg1.ibsrv.net\/gimg\/rennlist.com-vbulletin\/920x2000\/1_4_mile_after_12_16_at_125_mph_cc43db37acefb08e600c0b5b1a1d0526ed9f6ecc.png\" alt=\"\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003cbr\u003e\u003ci\u003e1\/4 Mile 991.2 GT3 Touring, No Launch Control, After Dundon Street Headers and 93mm Throttle Body.\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eJust for fun and to correlate a bit of what we see on the dyno grabbed a Trap speed to HP calculator and estimated the Touring at 3600lbs with driver and fluids (got the stock number about 500hp... and yes I know 3600lbs is likely a bit high...)\u003cbr\u003e\u003cbr\u003eHere's the site to play with it, simple physics calculator:\u003cbr\u003e\u003ca href=\"https:\/\/www.ajdesigner.com\/fl_horsepower_trap_speed\/horsepower_trap_speed.php\"\u003ehttps:\/\/www.ajdesigner.com\/fl_horsep...trap_speed.php\u003c\/a\u003e\u003cbr\u003e\u003c\/p\u003e\u003cfigure\u003e\u003cimg src=\"https:\/\/cimg2.ibsrv.net\/gimg\/rennlist.com-vbulletin\/1940x1292\/screen_shot_2019_10_05_at_5_00_59_pm_f200d2259ebaf06b258c632176f9b06c07d858b8.png\" alt=\"\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003cbr\u003e\u003ci\u003e121.19mph = 500.1 HP for 3600lb car\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eUsed the same calculator for 124.76mph trap speed\u003c\/p\u003e\u003cfigure\u003e\u003cimg src=\"https:\/\/cimg3.ibsrv.net\/gimg\/rennlist.com-vbulletin\/1948x1288\/screen_shot_2019_10_05_at_5_00_40_pm_e1222648188014861888e84547a5bf5bd0f9efcb.png\" alt=\"\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003cbr\u003e\u003ci\u003e124.76 = 545.6HP for a 3600lb car\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eThe difference gives us 45.5HP gains at the crank. A bit more than what we calculated on the dyno, but we expected a bit more with cool temps and a bit of ram air.\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"No Muffler","offer_id":31641790218276,"sku":"100-30261","price":12375.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler (3.0\" Outlets) PVD Black Tips","offer_id":31641790251044,"sku":"100-30253","price":17995.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler (3.0\" Outlets) PVD Black Tips","offer_id":31641790283812,"sku":"100-30255","price":17995.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler (3.0\" Outlets) Ti Tips","offer_id":31641790316580,"sku":"100-30254","price":18765.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler (3.0\" Outlets) Ti Tips","offer_id":31641790349348,"sku":"100-30256","price":18765.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud)","offer_id":42295642063023,"sku":"100-30257","price":24985.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/d3-street-header93mm-intake-kitoptional-lifetime-muffler-power-package-2018-2019-9912-touring-8840519.jpg?v=1761886388"},{"product_id":"d2-street-bundle-2016-991-1-gt3rs","title":"Street Header\/Lifetime Muffler Power Package (2016 991.1 GT3RS)","description":"\u003cp\u003ePackage Includes:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStreet Headers\u003c\/li\u003e\n\u003cli\u003eLifetime Muffler (Quiet or Loud w\/ PVD Black or Titanium Tips)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eDundon Street (Catted) tuned length headers and valved side delete exhaust system for the 991.1 GT3! We were able to keep all of the things that people love about our race headers:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eless weight\u003c\/li\u003e\n\u003cli\u003emore power,\u003c\/li\u003e\n\u003cli\u003egreat sound,\u003c\/li\u003e\n\u003cli\u003equiet when you want it to be\u003c\/li\u003e\n\u003cli\u003eno drone\u003c\/li\u003e\n\u003cli\u003elifetime structural warranty\u003c\/li\u003e\n\u003cli\u003e100% 30 day money back guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf you try it and don't like it, send it back and we'll give you your money back!\u003c\/p\u003e\u003cp\u003eWe use 321SS (a superior grade of Stainless steel to the cheaper 304SS) and use a metal core spiral wound 200CPSI catalytic converter. All our products are mfg in the USA in our shop in Gig Harbor, WA.\u003c\/p\u003e\u003cp\u003eBy routing the primaries up and positioning the catalytic converter more vertical we were able to retain 99% of the primary length of the race system. This is how we are able to achieve 31whp gains on the 991.1 GT3RS.\u003c\/p\u003e\u003cp\u003eYou get everything you love about the Dundon Race Headers; 321 SS construction, industry leading power, lifetime structural warranty, and 100% money back guarantee, if you try it and don't like it, send it back and we'll give you your money back!\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Loud Muffler PVD Black Tips","offer_id":46581272903855,"sku":"100-30024","price":14890.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler PVD Black Tips","offer_id":46581333622959,"sku":"100-30026","price":14890.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler Ti Tips","offer_id":46581333655727,"sku":"100-30025","price":15655.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler Ti Tips","offer_id":46581333688495,"sku":"100-30027","price":15655.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud)","offer_id":46581333721263,"sku":"100-30028","price":21875.0,"currency_code":"USD","in_stock":true},{"title":"Inconel Mini Crack Pipe","offer_id":46581333754031,"sku":"100-30030","price":17995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/street-headerlifetime-muffler-power-package-2016-9911-gt3rs-3628538.jpg?v=1762466245"},{"product_id":"d3-street-bundle-2016-991-1-gt3rs","title":"991.1 GT3RS Street Header, 93mm Intake Kit, Optional Lifetime Muffler Exhaust D3 Power Package","description":"\u003cp\u003eAdd Power and great sound and experience your Porsche’s true capabilities with the Dundon Power Package. Intentionally designed to bring big power with and distinct sound we all love, this kit is perfectly tailored to add more muscle, better sound, and increased performance to your specific GT car.\u003c\/p\u003e\n\u003cp\u003e+ 47LBFT AND +38WHP! We continue to develop and find power in the 991 NA GT Cars as we love the challenge of finding all the little things the accountants made the engineers back off on at the factory.\u003c\/p\u003e\n\u003cp\u003eThe 991.1\/991.2 GT3RS was first up, then we did the 991.2 GT3 Touring, Now the 991.2 GT3 (tested a pdk, applies to manuals as well). Next will be the 991.1 GT3 (as soon as the customer can get his car out of his garage due to torn up driveway...).\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eResults from a 991.2 GT3 PDK car. *from our testing a manual reads about ~10whp higher as there is less parasitic losses in the manual trans than the PDK. We'll work on getting a Winged Manual car to test, anyone in the NW interested contact us!\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eReran the numbers and 47lbft gains max and 38whp gains max with 475whp peak power!60-130 of a Customers 991.2 GT3 Stock\u003c\/p\u003e\n\u003cp\u003e60-130 of a customers car after the performance package\u003c\/p\u003e\n\u003cp\u003eProven performance you can feel!\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eBy reducing the pressure losses in the intake and allowing a more \"free flow\" into the engine the engine makes power two ways. First less engine power is used overcoming the parasitic losses of the stock intake tract. And Second we're able to get more high pressure air to the intake valve to cram in more air into the cylinder. Both of these translate into more power and on a car that uses Ram air to it's advantage (scoops on the decklid), the gains are more than can be measured on a static dyno.\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003e\u003cu\u003eIntake Kit\u003c\/u\u003e\u003c\/p\u003e\u003cp\u003eThe 93mm Throttle Body has 28.6% more area than the 82mm throttle body, while the Dual Reverse Cone Air Filter box adds 380% more filter area to reduce pressure drop and Increase Horsepower!\u003c\/p\u003e\u003cp\u003e*NOTE* - ONLY the 991.1 GT3RS (2016 model year) requires an ECU tune to run this intake package.\u003c\/p\u003e\u003cp\u003e\u003cu\u003eStreet Headers\u003c\/u\u003e\u003c\/p\u003e\u003cp\u003eWe were able to keep all of the things that people love about our race headers:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eless weight\u003c\/li\u003e\n\u003cli\u003emore power,\u003c\/li\u003e\n\u003cli\u003egreat sound,\u003c\/li\u003e\n\u003cli\u003equiet when you want it to be\u003c\/li\u003e\n\u003cli\u003eno drone\u003c\/li\u003e\n\u003cli\u003elifetime structural warranty\u003c\/li\u003e\n\u003cli\u003e100% 30day money back guarantee\u003cul\u003e\u003cli\u003eif you try it and don't like it, send it back we'll give you your money back!\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eConvertible to no cats with the swappable test pipes for track days (available separately).\u003cbr\u003e \u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWe use 321SS (a superior grade of Stainless steel to the cheaper 304SS) and use a metal core spiral wound 200CPSI catalytic converter.  All our products are mfg in the USA in our shop in Gig Harbor, WA.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe Dundon Street Headers on 991.2 GT3\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e477whp Peak \u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e20-25whp gains at 8200-8500 rpm\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e40lbft-46lbft gains at 3000-5000 rpm\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cu\u003eOptional Lifetime Center Muffler\u003c\/u\u003e\u003c\/p\u003e\u003cp\u003eWe're happy to announce our GT3RS Lifetime Center Muffler.  It's available in 2 \"flavors\" Quiet and Loud.  The Quiet is for those customers looking for no drone* while cruising and to quiet the car at full boogie to attenuate some of the dB levels on the track or on the street.  The Loud is the muffler for those looking for no drone* at cruise, but a pronounced bark when getting on it!\u003c\/p\u003e\u003cp\u003eWe've tested the Quiet on a 991 GT3 with side muffler deletes that was 104dB before the muffler and passing a 90dB day after .  We've tested on a stock 991 GT3RS and the car passed where it hadn't previously. And we tested on a 997.2 GT3 that had not passed at Laguna and passed a 90dB day.  We've recorded the Orange GT3 Center Muffler in our own testing at 10-12dB reduction over the OEM GT3 Muffler.  All of the testing was done on cars WITHOUT GPS Exhaust flap closing devices.\u003c\/p\u003e\u003cp\u003eLifetime Guaranteed including track use.\u003c\/p\u003e\u003cp\u003e321 Stainless Steel coupled with a high strength design.\u003c\/p\u003e\u003cp\u003eQuiet has no power loss (up to 450whp engines), sounds great and reduces sound levels 10-12dB over stock.\u003c\/p\u003e\u003cp\u003eLoud less restriction on higher powered cars (\u0026gt;450whp) and wicked flat six waiil!\u003c\/p\u003e\u003cp\u003e4\" rolled exhaust tips in PVD Black are Standard.  Titanium Tips are optional!  Add our Nurburgring Quiet Tips to further quiet your car down!\u003c\/p\u003e\u003cp\u003eDirect replacement of the OEM muffler, will fit existing modification if they work with the OEM Center Muffler.\u003c\/p\u003e\u003cp\u003eOEM 63mm or 3\" lower inlet sizing for increased flow.\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"No Muffler (2.5\" Outlets)","offer_id":46581273034927,"sku":"100-30040","price":16715.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler (3.0\" Outlets) PVD Black Tips","offer_id":46581333426351,"sku":"100-30032","price":22345.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler (3.0\" Outlets) PVD Black Tips","offer_id":46581333459119,"sku":"100-30034","price":22345.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler (3.0\" Outlets) Titanium Tips","offer_id":46581333491887,"sku":"100-30033","price":23105.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler (3.0\" Outlets) Titanium Tips","offer_id":46581333524655,"sku":"100-30035","price":23105.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud)","offer_id":46581333557423,"sku":"100-30036","price":29325.0,"currency_code":"USD","in_stock":true},{"title":"Inconel Mini Crack Pipe","offer_id":46581333590191,"sku":"100-30038","price":25445.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/d3-street-header93mm-intake-kitoptional-lifetime-muffler-power-package-2019-2020-9912-gt3rs-1039964.jpg?v=1762891356"},{"product_id":"d2-street-bundle-2019-2020-991-2-gt3rs","title":"Street Header\/Lifetime Muffler Power Package (2019-2020 991.2 GT3RS)","description":"\u003cp\u003eOur Most Popular Package. Street Headers and Lifetime Muffler!\u003c\/p\u003e\u003cp\u003eDundon Street (Catted) tuned length headers and valved side delete exhaust system for the 991.2 GT3RS! We were able to keep all of the things that people love about our race headers:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eless weight\u003c\/li\u003e\n\u003cli\u003emore power,\u003c\/li\u003e\n\u003cli\u003egreat sound,\u003c\/li\u003e\n\u003cli\u003equiet when you want it to be\u003c\/li\u003e\n\u003cli\u003eno drone\u003c\/li\u003e\n\u003cli\u003elifetime structural warranty\u003c\/li\u003e\n\u003cli\u003e100% 30day money back guarantee\u003cul\u003e\u003cli\u003eif you try it and don't like it, send it back we'll give you your money back!\u003c\/li\u003e\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWe use 321SS (a superior grade of Stainless steel to the cheaper 304SS) and use a metal core spiral wound 200CPSI catalytic converter. All our products are mfg in the USA in our shop in Gig Harbor, WA.\u003c\/p\u003e\u003cp\u003eBy routing the primaries up and positioning the catalytic converter more vertical we were able to retain 99% of the primary length of the race system. This is how we are able to achieve 23whp gains on the 991.2 GT3RS.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe Dundon Street Headers on 991.2 GT3RS\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e485whp Peak \u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e23whp gains at 8200-8500 rpm\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e43lbft gains at 3000-5000 rpm\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYou get everything you love about the Dundon Race Headers, 321 SS construction, industry leading power, lifetime structural warranty, and 100% money back guarantee, if you try it and don't like it, send it back we'll give you your money back!\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Loud Muffler PVD Black Tips","offer_id":46581273002159,"sku":"100-30024","price":14890.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler PVD Black Tips","offer_id":46581333262511,"sku":"100-30026","price":14890.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler Ti Tips","offer_id":46581333295279,"sku":"100-30025","price":15655.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler Ti Tips","offer_id":46581333328047,"sku":"100-30027","price":15655.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud)","offer_id":46581333360815,"sku":"100-30028","price":21875.0,"currency_code":"USD","in_stock":true},{"title":"Inconel Mini Crack Pipe","offer_id":46581333393583,"sku":"100-30030","price":17995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/street-headerlifetime-muffler-power-package-2019-2020-9912-gt3rs-7535367.jpg?v=1761886388"},{"product_id":"d3-street-bundle-2019-2020-991-2-gt3rs","title":"D3 Street Header\/93mm Intake Kit\/Optional Lifetime Muffler Power Package (2019-2020 991.2 GT3RS)","description":"\u003cp\u003eAdd Power and great sound and experience your Porsche's true capabilities with the Dundon Power Package. Intentionally designed to bring big power with and distinct sound we all love, this kit is perfectly tailored to add more muscle, better sound, and increased performance to your specific GT car.\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003ch2\u003e\u003cstrong\u003e52lbft and 45hp at the wheel gains\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003eThe Dundon Power Package for the 991.2 GT3RS - Peak Gains are about 25-28whp, 52lbft max gains (at 4200rpm) and 45whp max gains at 8500rpm (where you need it!) When testing the 991.2 GT3RS we quickly identified an inefficiency in the intake system. A few things to note:\u003cbr\u003e\u003cbr\u003e1. The Car is 520hp from the factory\u003cbr\u003e2. The Airfilter box is from a 991.1 Carrera S\u003cbr\u003e3. The Throttle Body is 82mm, the same it's been since the 996 GT3\u003cbr\u003e4. Neither the 996 GT3 nor the Carrera S are 520hp...\u003cbr\u003e\u003cbr\u003eFurther the 991.1 and 991.2 RS are designed with side intake scoops to \"Ram\" air into the intake tract and center plenum. So any restriction or \"friction\" in this path will prevent the car from reaching it's full power potential.\u003cbr\u003e\u003cbr\u003eHere's the Dundon 991.2 GT3RS Street Power Package:\u003cbr\u003e(and Thanks Alekshop in NorCal for the picture!)\u003cbr\u003e1. Dundon Catted Street Headers (Race Headers can also be used, but a Lifetime muffler or Crack Pipe is required)\u003cbr\u003e2. Dundon Dual Reverse Cone Airbox\u003cbr\u003e3. Dundon Wide Mouth Center Plenum\u003cbr\u003e4. 93mm Throttle Body and Adapter Harness\u003c\/p\u003e\u003cp\u003e5. Lifetime Muffler\u003c\/p\u003e\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/cimg8.ibsrv.net\/gimg\/rennlist.com-vbulletin\/1242x917\/image_1_66d04bdc40ed5655e22bc7d1dc6cd06b9dfd1862.jpg\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003ci\u003eThanks Alekshop for the nice photo!\u003c\/i\u003e\u003c\/p\u003e\u003cp\u003eHere's the result on our dyno with a 991.2 GT3RS including full kit and Lifetime Muffler, \u003cstrong\u003ekeeping in mind that the benefit of the parts is when the car is moving\u003c\/strong\u003e! Peak Gains are about 25-28whp, 52lbft max gains (at 4200rpm) and 45whp max gains at 8500rpm (where you need it!)\u003c\/p\u003e\u003cfigure class=\"image\"\u003e\u003cimg src=\"https:\/\/cimg5.ibsrv.net\/gimg\/rennlist.com-vbulletin\/1920x1080\/2019_9912_rs_stock_vs_catted_vs_93tb_max_gains_0f55cf5c7dbc4afb9b32d7cff5fd596d29015578.jpg\"\u003e\u003c\/figure\u003e\u003cp\u003e\u003ci\u003eBottom is Stock, Middle is Street Headers, Top is Complete Power Package\u003c\/i\u003e\u003c\/p\u003e\u003cp\u003eWe have both 991.1 RS and 991.2 RS installed with no CEL issues.\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"No Muffler","offer_id":46581273067695,"sku":"100-30040","price":16715.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler (3.0\" Outlets) PVD Black Tips","offer_id":46581333065903,"sku":"100-30032","price":22345.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler (3.0\" Outlets) PVD Black Tips","offer_id":46581333098671,"sku":"100-30034","price":22345.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler (3.0\" Outlets) Ti Tips","offer_id":46581333131439,"sku":"100-30033","price":23105.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler (3.0\" Outlets) Ti Tips","offer_id":46581333164207,"sku":"100-30035","price":23105.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud)","offer_id":46581333196975,"sku":"100-30036","price":29325.0,"currency_code":"USD","in_stock":true},{"title":"Inconel Mini Crack Pipe","offer_id":46581333229743,"sku":"100-30038","price":25445.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/d3-street-header93mm-intake-kitoptional-lifetime-muffler-power-package-2019-2020-9912-gt3rs-1039964.jpg?v=1762891356"},{"product_id":"d2-street-bundle-2018-2019-991-2-gt3","title":"Street Header\/Lifetime Muffler Power Package (2018-2019 991.2 GT3)","description":"\u003cp\u003eDundon Street (Catted) tuned length headers and valved side delete exhaust system for the 991.2 GT3! We were able to keep all of the things that people love about our race headers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eless weight\u003c\/li\u003e\n\u003cli\u003emore power,\u003c\/li\u003e\n\u003cli\u003egreat sound,\u003c\/li\u003e\n\u003cli\u003equiet when you want it to be\u003c\/li\u003e\n\u003cli\u003eno drone\u003c\/li\u003e\n\u003cli\u003elifetime structural warranty\u003c\/li\u003e\n\u003cli\u003e100% 30day money back guarantee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eif you try it and don't like it, send it back we'll give you your money back!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe use 321SS (a superior grade of Stainless steel to the cheaper 304SS) and use a metal core spiral wound 200CPSI catalytic converter. All our products are mfg in the USA in our shop in Gig Harbor, WA.\u003c\/p\u003e\n\u003cp\u003eBy routing the primaries up and positioning the catalytic converter more vertical we were able to retain 99% of the primary length of the race system. This is how we are able to achieve 25whp gains on the 991.2 GT3.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Dundon Street Headers on 991.2 GT3\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e477 whp Peak \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e20-25whp gains at 8200-8500 rpm\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e40lbft-46lbft gains at 3000-5000 rpm\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYou get everything you love about the Dundon Race Headers, 321 SS construction, industry leading power, lifetime structural warranty, and 100% money back guarantee, if you try it and don't like it, send it back we'll give you your money back! To that end, see the dyno below!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e991.2 GT3 Dundon Street (Catted) 477whp peak \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSome pics installed on the car, the street headers are only about 0.5\" shorter than our race headers. To fit everything we had to go up into the wheel well where the side mufflers sit. Only way to get the length required for real power gains...  \u003c\/p\u003e\n\u003cp\u003eDundon 991 GT3\/RS showing length of primaries and routing required to fit the cat\u003c\/p\u003e\n\u003cp\u003eAs you can see to get the length we wanted we had to go up, anything that can bolt up to the stock location is leaving power on the table...  \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTake a listen to it here!\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.dundonmotorsports.com\/blogs\/articles\/991-2-gt3rs-with-dundon-street-headers-and-lifetime-loud-muffler-sound-check\" target=\"_self\"\u003eDundon 991.2 GT3 and GT3RS Street Header-Loud Muffler Sound Check\u003c\/a\u003e\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Loud Muffler PVD Black Tips","offer_id":46581272936623,"sku":"100-30024","price":14890.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler PVD Black Tips","offer_id":46581332902063,"sku":"100-30026","price":14890.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler Ti Tips","offer_id":46581332934831,"sku":"100-30025","price":15655.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler Ti Tips","offer_id":46581332967599,"sku":"100-30027","price":15655.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud)","offer_id":46581333000367,"sku":"100-30028","price":21875.0,"currency_code":"USD","in_stock":true},{"title":"Inconel Mini Crack Pipe","offer_id":46581333033135,"sku":"100-30030","price":17995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/100-30024-6.jpg?v=1761863971"},{"product_id":"d3-street-bundle-2018-2019-991-2-gt3","title":"D3 Street Header\/93mm Intake Kit\/Optional Lifetime Muffler Power Package (2018-2019 991.2 GT3)","description":"\u003cp\u003eThis is the most complete, well-rounded power package around for the 991.2 GT3 4.0L. With careful consideration and many design, engineering and tuning hours, we have extracted impressive power, torque and drive-ability out of the 991.2 GT3 4.0L engine. The best part: no compromises. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePDK sees a max improvement of 47 lbft of torque and 38 whp\u003c\/p\u003e\n\u003cp\u003eManual sees a max improvement of 53 lbft of torque and 31 whp\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePEAK\u003c\/strong\u003e output OVER 473 horsepower at the \u003cstrong\u003ewheels!!!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBy reducing the pressure losses in the intake and allowing a more \"free flow\" into the engine the engine makes power two ways: First, less engine power is used to overcome the parasitic losses of the stock intake tract. Second, we're able to get more high pressure air to the intake valve (to cram in more air into the cylinder). Both of these translate into more power. On a car that uses \"Ram-Air\" to it's advantage (scoops on the decklid), the gains are \u003cstrong\u003emore\u003c\/strong\u003e than can be measured on a static dyno. Finally, we utilize Cobb's Accessport to free up the remaining power that the ECU has been holding back. The result? The car drives like an absolute rocket!!  Kit Includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDundon Dual Reverse Cone Airbox\u003c\/li\u003e\n\u003cli\u003eDundon Center Plenum with 93mm Throttle Body\u003c\/li\u003e\n\u003cli\u003eComplete Dundon Exhaust\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eStreet Headers\u003c\/li\u003e\n\u003cli\u003eHigh Flow Cats\u003c\/li\u003e\n\u003cli\u003eValves\u003c\/li\u003e\n\u003cli\u003eChoice of Muffler: \u003c\/li\u003e\n\u003cli\u003eStainless Steel with either Black or Titanium tips (Classic Dundon sound, minimal drone and quite usable)\u003c\/li\u003e\n\u003cli\u003eTitanium Ultralight with Loud Inserts (Quieter at low RPM, Zero drone, High-pitch scream at full throttle)\u003c\/li\u003e\n\u003cli\u003eInconel Megaphone Mini Crack Pipe (Full Race car most of the time, valves do a little to take the edge off)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dundon Motorsports","offers":[{"title":"No Muffler (2.5\" Outlets)","offer_id":31641778421796,"sku":"100-30196","price":17405.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler (3.0\" Outlets) PVD Black Tips","offer_id":31641778454564,"sku":"100-30188","price":22995.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler (3.0\" Outlets) PVD Black Tips","offer_id":31641778487332,"sku":"100-30190","price":22995.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler (3.0\" Outlets) Ti Tips","offer_id":31641778520100,"sku":"100-30189","price":23795.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler (3.0\" Outlets) Ti Tips","offer_id":31641778552868,"sku":"100-30191","price":23795.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud)","offer_id":42295639703727,"sku":"100-30192","price":29995.0,"currency_code":"USD","in_stock":true},{"title":"Inconel Mini Crack Pipe","offer_id":42295639998639,"sku":"100-30194","price":26135.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/d3-street-header93mm-intake-kitoptional-lifetime-muffler-power-package-2018-2019-9912-gt3-1100018.jpg?v=1762300578"},{"product_id":"d2-street-bundle-2010-2011-997-2-gt3","title":"Street Header\/Lifetime Muffler Power Package (2010-2011 997.2 GT3)","description":"\u003cp\u003eAdd Power and great sound and experience your Porsche's true capabilities with the Dundon Power Package. Intentionally designed to bring big power with and distinct sound we all love, this kit is perfectly tailored to add more muscle, better sound, and increased performance to your specific GT car.\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003ePackage Includes:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStreet Headers\u003c\/li\u003e\n\u003cli\u003eLifetime Muffler\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dundon Motorsports","offers":[{"title":"Loud Muffler PVD Black Tips","offer_id":46581273133231,"sku":"100-30043","price":14435.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler PVD Black Tips","offer_id":46581332738223,"sku":"100-30045","price":14435.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler Ti Tips","offer_id":46581332770991,"sku":"100-30044","price":15200.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler Ti Tips","offer_id":46581332803759,"sku":"100-30046","price":15200.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud)","offer_id":46581332836527,"sku":"100-30047","price":21420.0,"currency_code":"USD","in_stock":true},{"title":"Inconel Mini Crack Pipe","offer_id":46581332869295,"sku":"100-30049","price":17540.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/street-headerlifetime-muffler-power-package-2010-2011-9972-gt3-4031645.jpg?v=1762632675"},{"product_id":"d4-street-bundle-2010-2011-997-2-gt3","title":"D4 Street Power Package (2010-2011 997.2 GT3)","description":"\u003cp\u003eAdd Power and great sound and experience your Porsche’s true capabilities with the Dundon Power Package. Intentionally designed to bring big power with and distinct sound we all love, this kit is perfectly tailored to add more muscle, better sound, and increased performance to your specific GT car.\u003c\/p\u003e\n\u003cp\u003eCAUTION! If your engine is in poor health, this Power Package will expose any issues lurking within. We recommend installing these kits on healthy engines only. No returns for any issues caused by an engine in poor condition. Compression and Leak Down testing prior to install is recommended!\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003ePackage Includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStreet Headers (w\/ cats)\u003c\/li\u003e\n\u003cli\u003eCobb AP w\/ Pro Tune\u003c\/li\u003e\n\u003cli\u003e997 GT3 Intake Manifold w\/ 93mm Throttle Body\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Dundon Street headers by itself give a huge improvement to performance and the overall sound of the system, combined with the Cobb AP Pro Tune this will bring an even bigger improvement in the performance all around but especially in the mid range. This performance increase is even further optimized with the increased air volume with the engineered Dundon Resonance Intake Manifold with a larger throttle body of 93mm, exponentially bigger compared to stock 82mm.\u003c\/p\u003e\n\u003cp\u003eBase package is fantastic as is, but we would all like better! This package comes with even more optimizing options.\u003c\/p\u003e\n\u003cp\u003eOptional Items\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDundon Lifetime Muffler (Quiet or Loud, your choice of tips)\u003c\/li\u003e\n\u003cli\u003eDundon Dual Cone Carbon Fiber Air Intake\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe optional items are all about giving your vehicle that little push of improvement that can separate yourself from others.\u003c\/p\u003e\n\u003cp\u003eOur lifetime mufflers are all about well… longevity! A lifetime guarantee even including track use allows you to have worry free use while giving you two different sounds depending on your preference. The Quiet is for those customers looking for no drone* while cruising and to quiet the car at full boogie to attenuate some of the dB levels on the track or on the street.  The Loud is the muffler for those looking for no drone* at cruise, but a pronounced bark when getting on it!\u003c\/p\u003e\n\u003cp\u003eThe two two tip options are all about what flavor of sound you're looking for!\u003c\/p\u003e\n\u003cp\u003eNot to sell you too much, but remember that intake system included with the package? The one with the bigger throttle body? Well optimize that size with the lighter and larger carbon fiber airbox! Just with the headers you can see an increase of 8-10 whp.\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Lifetime Muffler - Loud \/ Titanium \/ Dundon Dual Cone Carbon Airbox","offer_id":39264138625199,"sku":"100-30053","price":29595.0,"currency_code":"USD","in_stock":true},{"title":"Lifetime Muffler - Loud \/ Titanium \/ None (OEM Airbox)","offer_id":39264138657967,"sku":"100-30052","price":26405.0,"currency_code":"USD","in_stock":true},{"title":"Lifetime Muffler - Loud \/ PVD Black \/ Dundon Dual Cone Carbon Airbox","offer_id":39264138690735,"sku":"100-30051","price":28835.0,"currency_code":"USD","in_stock":true},{"title":"Lifetime Muffler - Loud \/ PVD Black \/ None (OEM Airbox)","offer_id":39264138723503,"sku":"100-30050","price":25635.0,"currency_code":"USD","in_stock":true},{"title":"Lifetime Muffler - Quiet \/ Titanium \/ Dundon Dual Cone Carbon Airbox","offer_id":39264138821807,"sku":"100-30057","price":29595.0,"currency_code":"USD","in_stock":true},{"title":"Lifetime Muffler - Quiet \/ Titanium \/ None (OEM Airbox)","offer_id":39264138854575,"sku":"100-30056","price":26405.0,"currency_code":"USD","in_stock":true},{"title":"Lifetime Muffler - Quiet \/ PVD Black \/ Dundon Dual Cone Carbon Airbox","offer_id":39264138887343,"sku":"100-30055","price":28835.0,"currency_code":"USD","in_stock":true},{"title":"Lifetime Muffler - Quiet \/ PVD Black \/ None (OEM Airbox)","offer_id":39264138920111,"sku":"100-30054","price":25635.0,"currency_code":"USD","in_stock":true},{"title":"None (OEM Muffler) \/ None (OEM Muffler) \/ Dundon Dual Cone Carbon Airbox","offer_id":39264139149487,"sku":"100-30065","price":23205.0,"currency_code":"USD","in_stock":true},{"title":"None (OEM Muffler) \/ None (OEM Muffler) \/ None (OEM Airbox)","offer_id":39264139182255,"sku":"100-30064","price":19995.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud) \/ Titanium \/ Dundon Dual Cone Carbon Airbox","offer_id":42295666049199,"sku":"100-30059","price":35815.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud) \/ Titanium \/ None (OEM Airbox)","offer_id":42295666081967,"sku":"100-30058","price":32625.0,"currency_code":"USD","in_stock":true},{"title":"Inconel Mini Crack Pipe \/ None (OEM Muffler) \/ Dundon Dual Cone Carbon Airbox","offer_id":42295666114735,"sku":"100-30063","price":31935.0,"currency_code":"USD","in_stock":true},{"title":"Inconel Mini Crack Pipe \/ None (OEM Muffler) \/ None (OEM Airbox)","offer_id":42295666147503,"sku":"100-30062","price":28745.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/d4-street-power-package-2010-2011-9972-gt3-5477660.jpg?v=1761803554"},{"product_id":"d2-street-bundle-2011-997-2-gt3rs-4-0","title":"Street Header\/Lifetime Muffler Power Package (2011 997.2 GT3RS 4.0)","description":"\u003cp\u003eAdd Power and great sound and experience your Porsche's true capabilities with the Dundon Power Package. Intentionally designed to bring big power with and distinct sound we all love, this kit is perfectly tailored to add more muscle, better sound, and increased performance to your specific GT car.\u003c\/p\u003e\n\u003ch3\u003eTechnical Description\u003c\/h3\u003e\n\u003cp\u003ePackage Includes:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStreet Headers\u003c\/li\u003e\n\u003cli\u003e321 Stainless Lifetime Muffler\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Dundon Motorsports","offers":[{"title":"Loud Muffler PVD Black Tips","offer_id":46581273460911,"sku":"100-30246","price":14435.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler PVD Black Tips","offer_id":46581332574383,"sku":"100-30248","price":14435.0,"currency_code":"USD","in_stock":true},{"title":"Loud Muffler Ti Tips","offer_id":46581332607151,"sku":"100-30247","price":15200.0,"currency_code":"USD","in_stock":true},{"title":"Quiet Muffler Ti Tips","offer_id":46581332639919,"sku":"100-30249","price":15200.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud)","offer_id":46581332672687,"sku":"100-30250","price":21420.0,"currency_code":"USD","in_stock":true},{"title":"Inconel Mini Crack Pipe","offer_id":46581332705455,"sku":"100-30252","price":17540.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/Street-Header-Lifetime-Muffler-Power-Package-2011-997-2-GT3RS-4-0-1x1.jpg?v=1789759610"},{"product_id":"d4-street-bundle-2011-997-2-gt3rs-4-0","title":"D4 Street Power Package (2011 997.2 GT3RS 4.0)","description":"\u003cp\u003ePackage Includes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStreet Headers (w\/ cats)\u003c\/li\u003e\n\u003cli\u003eCobb AP w\/ Pro Tune\u003c\/li\u003e\n\u003cli\u003eDundon Resonance Intake Manifold w\/ 100mm Throttle Body\u003c\/li\u003e\n\u003cli\u003e997.1 Secondary Air Injection Retrofit (required for 997.2 cars)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Dundon Street headers by itself give a huge improvement to performance and the overall sound of the system, combined with the Cobb AP Pro Tune this will bring an even bigger improvement in the performance all around but especially in the mid range.\u003c\/p\u003e\n\u003cp\u003eThis performance increase is even further optimized with the increased air volume with the engineered Dundon Resonance Intake Manifold with a larger throttle body of 100mm, exponentially bigger compared to stock 82mm.\u003c\/p\u003e\n\u003cp\u003eTo make sure this whole system isn’t tainted by one small flaw, the secondary air injection retrofit allows for 100% clean filtered air for your intake system.\u003c\/p\u003e\n\u003cp\u003eBase package is fantastic as is, but we would all like better! This package comes with even more optimizing options.\u003c\/p\u003e\n\u003cp\u003eOptional Items\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDundon Lifetime Muffler (Quiet or Loud, your choice of tips)\u003c\/li\u003e\n\u003cli\u003eDundon Dual Cone Carbon Fiber Air Intake\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe optional items are all about giving your vehicle that little push of improvement that can separate yourself from others.\u003c\/p\u003e\n\u003cp\u003eOur lifetime mufflers are all about well… longevity! A lifetime guarantee even including track use allows you to have worry free use while giving you two different sounds depending on your preference. The Quiet is for those customers looking for no drone* while cruising and to quiet the car at full boogie to attenuate some of the dB levels on the track or on the street. 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Just with the headers you can see an increase of 8-10 whp.\u003c\/p\u003e","brand":"Dundon Motorsports","offers":[{"title":"Lifetime Muffler - Loud \/ Titanium","offer_id":39264173555887,"sku":"100-30068","price":26405.0,"currency_code":"USD","in_stock":true},{"title":"Lifetime Muffler - Loud \/ PVD Black","offer_id":46581332377775,"sku":"100-30066","price":25635.0,"currency_code":"USD","in_stock":true},{"title":"Lifetime Muffler - Quiet \/ Titanium","offer_id":46581332410543,"sku":"100-30072","price":26405.0,"currency_code":"USD","in_stock":true},{"title":"Lifetime Muffler - Quiet \/ PVD Black","offer_id":46581332443311,"sku":"100-30070","price":25635.0,"currency_code":"USD","in_stock":true},{"title":"None - Use OEM Muffler \/ None","offer_id":46581332476079,"sku":"100-30080","price":19995.0,"currency_code":"USD","in_stock":true},{"title":"Titanium Ultralight Muffler (Loud) \/ Titanium","offer_id":46581332508847,"sku":"100-30074","price":32625.0,"currency_code":"USD","in_stock":true},{"title":"Inconel Mini Crack Pipe \/ None","offer_id":46581332541615,"sku":"100-30078","price":28745.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0075\/5046\/8132\/files\/d4-street-power-package-2011-9972-gt3rs-40-5470528.jpg?v=1761803552"}],"url":"https:\/\/www.dundonmotorsports.com\/collections\/smokies.oembed?page=4","provider":"Dundon Motorsports","version":"1.0","type":"link"}