I was thinking bout getting the Injen CAI and the Injen Cat back exhaust and test pipes...any suggestions or comments on on injen products? according to their site and dynos i have seen the exhaust system adds about 12hp to the wheels and same with CAI dunno bout test pipes though...suggestions?maybe different brands?? what springs should i get???? i saw some Tein springs only for about 180.

 

Seach, search, search!

 

Take advertised hp numbers with a grain of Rock Salt.

 

don't believe all the dyno charts you see from the manufacturer.. you really can't feel 5 or so horsepower gains anyways.. intake and exhaust mods are mostly for increasing the amount of noise your car produces..

if you're looking for suspension mods, i think you should look at the hotchkis stage one mod that includes sway bars and some lowering springs..

 

injen is a great brand. i'd recommend injen products. likewise about intake/exhaust upgrades...it aint gonna be much, but it's worth it IMO.

 

I saw some independent dyno numbers on the Injen exhaust. Its more like 7.6hp. That wont be noticed. As for the Injen CAI, if anything, you'll make like 2hp from that. Like someone said before, they are clearly for looks and noise. That being said... I love my Injen CAI, and I'm picking up the Injen exhasut soon just b/c I like the way it looks.

 

From what I've heard, getting an air insert like a K&N Filter, gives almost the equivalent gains as getting a CAI on the G35's. Would you guys agree with this?