i have a 2004 cayenne tt and i want some hp? which company is more reliable,which sounds better,which gives more power,which is better for the money, i want bypass ,exhaust ,intake,ecu.. any ideas?

 

For exhaust, you can also look at Tubi, they make pipes for the Cayenne S and Turbo

can't comment on the rest though

 

You should do fabspeed bypass,bmc filters with GIAC or PSI550
cromagnet and sfbimmer can help you out they've done theirs already, I'm still thinking abotu mine i heard cargraphic is great also but I dont know anyone in this forum that used them.

 

i agree.....i have the fabspeed bypass pipes and cat-back exhaust, the hp gains are an estimated around 25-40hp increase but the sound and flow of the truck after really makes a huge difference.....the sound is pretty loud...almost like an older muscle car with that porsche flair..... the bypass pipes are only 550 and the exhaust was $2000( i think 2500 normally) i got a discount b/c i was the first to get the fabspeed cat back exhaust!! i also had it installed by fabspeed which is located in PA where i live.....

 

The cargraphic muffler sounds really nice. Cant comment on fabspeed however I recommend you get their bypass pipes since they are relatively inexpensive to the supposedly HP you gain

 

Cargraphic and Rinspeed are the best sounding IMO, if you want something wicked and loud you cant go wrong with the rinspeed...the tips look cool to!