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      08-11-2011, 08:32 AM   #6
jaf89f
Second Lieutenant
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Drives: 2008 128i
Join Date: Jul 2010
Location: St. Louis, MO

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i'm assuming its the transmission whine bc when you watch racing footage from inside a car, those high performance race cars have a similar whine noise but a LOT louder.

That or it's just something in the engine (i dont want to use this word cuz there isn't a turbo but...) "spooling" up so to speak.