997 GT3 GT3RS and Cup Resonance Intake Manifold


While the 997 platform is well-established, we are excited to share a new product that is the result of years of work. We are employing an old concept to breathe new life into this beloved platform. Chrysler explored the use of this technique way back in the 1960’s: Resonance Charging. Factory Porsche 996 & 997 GT3’s use “third order” resonance. At a basic level, this means the pressure wave travels the intake runner three times before the intake valve opens. After carefully dissecting all of the variables, we were able to develop a second order resonance intake manifold. By harnessing the pressure wave on it’s second “bounce” instead of the third, we preserve more pressure, and get that into the cylinder to make more power! - Stay tuned for an in-depth video series that explains this work.

Now to the goods: This intake manifold when combined with our header packages will give your 997 GT3/Cup 3.6/3.8/4.0L and 991.1 Cup up to 60 additional horsepower to the wheels!  It's also compatible with our street or race headers, so if you want to go all out, we have that too! The 100mm throttle body allows low resistance to flow and helps keep your engine running at peak performance levels. On our 3.8L test car we increased the power from 400whp peak with race headers alone to 440whp with race headers - that's a huge difference! The intake manifold improves power on all variations we’ve tested, but was most compelling when paired with an effective set of headers (like our Street or Race versions).

Dyno above is 997.2 GT3 with Dundon Resonance Intake and Dundon Race Headers.



Our manifolds are 3D printed in nylon, so heat-transfer and weight are minimized. They are also constructed in 5 separate pieces to allow for installation without removing the engine.

You'll be able to feel the difference in your Porsche right away after installing one of these bad boys into your engine bay! Not only will it make more horsepower but also provide better throttle response and smoother acceleration throughout the RPM range which means less time spent waiting around at stoplights and more time driving fast down back roads where you belong!


block.settings.landing_page_title Dundon Motorsports provides first-in-class components and materials for your race, track, or street car. Click here to see a list of both our proprietary Dundon engineered parts along with parts from a carefully selected list of other top-end manufacturers.


block.settings.landing_page_title After-market performance parts should add performance … Dundon Motorsports ensures all of our parts are fully tested on our in-house enclosed and vented dynomometer cell ensuring customers always receive the highest level of integration and performance from their motorsports investment.


block.settings.landing_page_title Whether it be a complete engine or transmission rebuild, installation of after-market performance parts, new suspension or set up, or even just some fresh fluids for your car, Dundon Motorsports is your one-stop shop. Contact us to discuss your needs or dreams and we'll be happy to help!