is there a web site for gmpp?i am interested in an intake and exhaust for my 2.4L.

 

gm performance parts = gmpp

 

Installed both the intake and exhaust in May. Both are quality parts. The exhaust was easy to install and I really like the deep tone. I didn't see a tremendous increase in mileage, but it sure is snappier.

 

The only problem I have with my setup is the drone. It becomes negligible after a while, but at highway speeds(60+) when the car comes under a load (accelerating/hills) the drone becomes very prominent. This is true for any gear under if you put the engine under load below about 3500 rpm.