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      08-15-2011, 08:29 AM   #17
Riley1524
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Drives: A Slow Ass BMW
Join Date: Feb 2011
Location: Atlanta, Ga.

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I think it may be a combination of belt and transmission whine. All N52's I've been in makes the same noise. Now, if it makes a really loud whine at a constant speed, take it in.
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2009 328i E93: Sport suspension, Carbon fiber performance spoiler, Lux AE's, K style carbon fiber front lip spoiler.