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Although the stock car sounds awesome enough I tend to think tuners will manage to tweak the motor for even more performance once they figure out how to get into the pcm for tuning capability...throw in a wilder cam....maybe a set of long tube headers....(not sure if its worth the extra 10% more horsepower to void the warranty)
500's a pretty hefty number especially since it comes in fully warrantied...
Track events too according to Hills comments in Autoweek this week...
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2008 C6 M6 Z51 NPP /2008 CTS AWD 3.6 DI FE2
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