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      07-12-2019, 08:55 PM   #11
Bartledoo
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Drives: 2011 E90 M3 6MT
Join Date: Aug 2015
Location: Seattle, WA

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I have the purple diff bushings in my 6MT. The diff whine was only really annoying at two specific speeds...After I removed the rear seats and the rear trunk floor panel the diff whine became a bit more annoying lol. Even my corsa exhaust has some drone with all of that removed though. It sounds pretty badass in the cabin now, but not very "luxurious".
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