Originally posted by: crazySOB297
I found an aftermarket ECM if shabby/shaggy happens to see this thread:
Here
You'll be lucky to get 10hp out of that ecm, it was reworked using hptuners software which has very little control of the ecm.
However within the coming weeks hptuners promised us they'll be going back to work on our ecm and will be releasing a beta soon. It only took
a year of nagging to get them to respond

There is another tune out there that manages 290rwhp/310lbs ft of torque, but when you look at the datalog it looks a bit iffy and not sure i'd want to use it.
Anyhoo the aftermarket isnt that big, but exhaust/intakes/intercoolers/suspensions are available from numerous vendors. Check out
www.solsticeforum.com and
www.skyroadster.com to get an idea of the vendors.
The 2008 turbo kappas have this funny brake problem, cost cutting at fault here, not sure if you noticed it on your test drive but right after you start it you basically have no brake assist for the first 30-60 seconds but gm apperantly released an ecm update for this recently. There were some rumors that for 2009 MY they will use the same parts that they used in the 2007 cars to permanently fix this problem
No trunk space, no one hand top operation... who needs it? You get 260hp, 50/50 weight distribution and one of the best handling roadsters out there.
The trunk mod has to be done at rpi, they dont sell it on their website.
Any other questions just ask, i've haf my gxp for over a year and a half.