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      06-10-2012, 04:40 PM   #12
Velocity26
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Drives: 2010 335i M-Sport
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There was a horrible rattle for about the first 3 minutes, not sure if it was internal (muffler baffle) or a pipe rubbing something, but it cleared up after it got warm (about 4 minutes) and then sounds great. It may be something that the GoPro picks up better than our ears would.
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