im thinking about purchasing a k&n cai
K&N FIPK Air Intake Kit - 04-06 Grand Prix 57-3049 - PFYC.com
does anyone have any experience with this particular product, was their a noticeable gain in performance/sound/fuel economy?
also is this the only one applicable to an 04 gtp because ive looked around and can only find that one, i would like to get the 63 series but all the auto stores ive gone to say the 57 series one is the only one that shows up for that car