07-17-2009, 08:39 PM
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#283
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First Lieutenant
Drives: 2008 BMW 335i E92 6 MT
Join Date: Jun 2009
Location: Somewhere on Planet Earth for now.
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Quote:
Originally Posted by raceyBMW
HAHA, are you serious? No way was the exhaust flap mod a cause of this. There is no horsepower lost, if anything you actually might gain a tiny amount because of the reduced back pressure at all RPM.
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+1
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