Thread: BMW M3 vs 335i
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      06-24-2009, 12:46 PM   #66
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Originally Posted by M3 Montreal View Post
ESS has a supercharger that will be coming out on the market in the next few months that is around 11.5 k and about 12 hours of labor. Dyno has it at 560 WHP with the charger and tune. Freeing up the exhaust would add some more to that.
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Those are huge gains.
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