I installed the IPD Plenum in my 2004 Boxster S 3.2 and it works very well. I was a bit skeptical due to Mexico City altitude, but it worked very well. I can feel the performance gains between 2,200m and 3,100m (7,218 ft and 10,171 ft) above sea level.
I’ve heard a lot of chatter about IPD plenums over a few Porsche forums. Some people say they have a moderate improvement some say no improvement at all. I called IPD expressing my hesitation. Upon my discussion with Greg, I was confident that if I ran into any issues, I would be fully refunded. So, I purchased IPD plenum and 74mm throttle body. In the first couple of hours of driving, I didn’t see much difference, but THEN, after the ECU adjusted itself I felt SO much improvement! It picks up much faster across the entire bandwidth. Later on, I had ECU remapped to accommodate the additional airflow. Finally, with IPD plenum, 74mm throttle and remapped ECU, it almost feels as I have 911 in the body of 986, such a massive difference! Any 986 owner would agree that it feels underpowered from the factory, even S modeld. Well, not anymore!!!! Special thanks to Greg for his excellent support, now I have this setup on my sons 986.1 and my 986.2 — HUGE DIFFERENCE!!!!! Regards, Vadim!
Very easy installation and immediate results. Definitely greater throttle response and boost at all ranges. Very happy with this.
After taking stock throttle body and plenum off the Porsche and then installed the IPD plenum with new throttle body and silicone hose got more horsepower out of the engine big win I would think reasonable price too
Fantastic product, excellent design and met performance expectations.
The product is must for all Porsche owners. In addition to the plenum, I have added a TB from the Carrera GT. The power is just sublime. Greg (salesperson) was a great support through the entire process and made it all easy for me.
Great quality and upgrade can feel the difference!
Great product and easy to install. More air = more horsepower
Nicely designed, easy to install (by Boxster standards anyway) The real proof is in driving the car!! the throttle response is totally an upgrade from stock, had to adjust the way I let out the clutch from a stop because it is sooooooo much better!