OP, I have the Stillen kit and have absolutely no problems and made plenty of power. (455whp)
Stillen is having trouble with their tune, but if you get the car tuned by a third party then you will have no problems. If you are getting all those other mods you will need a custom tune anyway, so don't worry, the kit works great. Its just STILLEN's tune that is having issues.
Last edited by AK370Z; 09-13-2010 at 05:28 AM.
Reason: AK
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