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      10-23-2012, 04:36 PM   #11
ilya335
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Drives: BMWs
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There are multiple threads out there about the M5/M6 being underrated by the factory stock.

http://f10.m5post.com/forums/showthread.php?t=740823

But with 632hp, it sounds like someone might have slapped a tune on it .
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