Performance ??

I just installed my ecu ?? my car runs better but they told you wont feel much a difference if i have the stock exhaust an stock air intake . any reconmendation on wut air intake they told me fenderwell ??

K&N is a nice filter. I believe thay have a liftime warranty as well.

I just installed my ecu ?? my car runs better but they told you wont feel much a difference if i have the stock exhaust an stock air intake . any reconmendation on wut air intake they told me fenderwell ??

I just have a Open-cone intake with a 9" K&N filter. If you want a true cold air intake i would go with a fenderwell intake. The will be more expensive but you can also make your own. Speedbuilt makes a real nice intake and so does WIZair. Below is a link for the fenderwell intake...you could save alot of money just makingy our own though. BTW what ECU/PCM did you get? Im assuming you meant you got a reprogramed computer? B/C you should feel some major difference in shift points and it should have really woke your car up even w/out exhaust or intake mods.

http://www.pfyc.com/pc/WB3032/GPUNDER/Speedbuilt++Fenderwell+Intake+Kit.html

Saulgar,

In the future it would help to post what year and model Grand Prix you have so people do not speculate as to what mods are recommended or the effects or benefits of certain mods. Big difference between getting advice on a GT or GTP.

Based on your prior post history I see you have a '99 GT.