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      06-24-2012, 08:10 PM   #46
Onurleft
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Drives: RPM
Join Date: May 2010
Location: Baton Rouge and Atlanta

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You need test pipes, pullies, full intake and a custom dyno tune by companies like Epic MotorSports or Evolve.

There have been E9x's with these modifications reach over 390rwhp. That'll be plenty to hang with a stock C63 with all your extra weight
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