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      08-30-2011, 06:09 AM   #5
J08M3
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Quote:
Originally Posted by MischiMischi View Post
I think it is definitely a drone - you can also feel a slight vibration.
Even OEM has slight drone at that RPM. BMW put out a tech bulletin about that years ago. In my opinion the performance drone is no more or less than the OEM muffler.
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