I'm considering this mod as an attempt to boost HP in my purely stock 3.8S. However, I can't find any resources showing a real-life dyno result for either of the IPDs they offer.
Any suggestions? Obviously their website boasts big gains, but I'm a skeptical kinda guy.
Thanks for any links to dyno tests.

 

May do a little something at the top of the rpm range. Have one in my wife's car and my Cayenne Turbo S just because I hate plastic components in the engine bay as they always crack and leak over time, especially in the Cayenne.

 

These guys test IPD’s inlet manifold with a GT3 throttle body on a 3.6 997.1

https://www.youtube.com/watch?v=mc9c07qCuKY

More 997 content collected here…

https://rennlist.com/forums/997-forum/974871-997-professional-reviews.html

Karl.

 

Karl.

Perfect - thank you! That vidoe just saved me a ton of $$!!

 

Karl.

In regards to the IPD setup, the ecu needs more time to adjust. Also, you really need a tune due to so much air flow and the optimal setup will be to get it tune to correct air/fuel ratio. Then run a proper exhaust system, ......go catless and you can gain as much as 40hp.
The test in the video is not accurate. A dyne shop should know that.

 

I got IPD plenum, BMC filter, AWE exhaust manifold, and fab speed 200 cell cats together with Softronic eco tune. I'm not sure if car gained much hp but it feels much better. It way more fun to drive with lower rpm. Originally if I wouldn't push it in the higher rev territory I wouldn't feel much power. Now it feels way better around 3-4k rpm. I think in terms of being cost efficient I would do 200 cell cats, performance air filter and ecu. If you want to go bit further you can do exhaust manifold but I would do plenum as one of the last upgrades.

 

I had an IPD in a 997.2 C2S and it made significant difference "feel" wise.
The torque band shifted and the overall response felt better. Honestly the car feels dull without it after getting used to it.
Did not dyno it but I have a ton of time with modified cars and it was very noticeable.

 

can't expect changing one single item and see significant gain.
Try adding plenum, gt3 throttle body, long tube headers, 200 cats, and larger airbox.