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      07-13-2017, 02:14 PM   #5
MMamazing
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Drives: 2009 M3 ZCP
Join Date: Jul 2017
Location: CA

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Quote:
Originally Posted by deansbimmer View Post
Doesn't sound like engine at all. Sounds to me like a loose trim panel rattling around. Probably comes up at a moderate degree of wind and road speed, which is why you can't replicate it standing still or in low gears.

Also, sounds like you've got some audible whine from a diff bushing or wheel bearing?

Yes, the car has a solid differential bushings.. Also have some interior rattle sounds. Those sounds are normal I would love to think it is not engine related but the car seems to only make the sounds while under load though at a certain RPM range, suggesting something engine or motor movement related..
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