Dundon Motorsports stands behind our products with a 30-day love it guarantee. We are confident in the quality and performance of their upgrades, but if for any reason they don't meet your standards or help you push your performance on track, you can send them back within 30 days.
Availability & Lead Times
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Some products are built locally and made to order.
Typical lead time for welded components (mufflers, headers) is about 7 business days after purchase.
In rare cases timelines may change—we’ll notify you by phone.
This 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.
All dyno figures are from a 2018 GT3 manual running 92 Octane pump fuel.
You are reading that correctly! MAX gains of 65whp and 64lb-ft of torque!
PEAK output OVER 502 horsepower at the wheels!!!
By 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 more 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:
Dundon Dual Reverse Cone Airbox
Dundon Center Plenum with 93mm Throttle Body
Complete Dundon Exhaust
Street Headers
High Flow Cats
Valves
Choice of Muffler:
Stainless Steel with either Black or Titanium tips (Classic Dundon sound, minimal drone and quite usable)
Titanium Ultralight with Loud Inserts (Quieter at low RPM, Zero drone, High-pitch scream at full throttle)
Inconel Megaphone Mini Crack Pipe (Full Race car most of the time, valves do a little to take the edge off)