I purchased my GXP last June and I still wonder what was I thinking....because mods are so $$$$$$ on this car. First of all do you want your car to go faster on the street or on the track? Or do you just want a nicer sounding car?
some thoughts;
#1 Sound;
I have a magnaflow and I don't like it...too much drone
Some guys have electric cut outs and love it
Lots of guys have posted sound clips, so go check it out
#2 If I was limited to $2000 and I wanted track speed and some friday/saturday night action I would tighten up the transmission with a dogbone/polymount, transgo shift kit and then purchase a very simple N2O system...small shot...50 shot...
other mods;
A. headers; I think the thread said 12 whp gain it also comes with a nasty noise that guys are complaining about. Lots of $ for very little performance in my opinion
B. LS6 intake no one is making it so you will have to make it yourself, you got to know what you are doing here
C. rockers and spring kit...$1100 bucks plus install get you 18-25 whp (I have this kit and will do the install this week)
D. Hogan dp lots of guys like this install but it could/will set a code
E. Performance chip/hand held tuner; I have one and I could tell the difference but I will have to move on up to the next level this fall...professional tune...don't rec for you
F. Ported intake...I did my own install with some professional help. Opinions vary on whp...12-18/20
Whatever you decide to do....get a transmission cooler!
I hope this info is helpfull
