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      07-21-2012, 02:27 PM   #2
Bimmer-Bob
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Drives: 2010 128i
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That seems really good for just the exhaust. I'm thinking the engine might be a little underrated? Assuming a 15% drivetrain loss (which is a big assumption, I guess, but I always hear people throwing that number around) you're sitting north of 245 BHP. Not bad at all.
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Last edited by Bimmer-Bob; 07-21-2012 at 02:38 PM..
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