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      10-13-2012, 05:33 PM   #17
n54door
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Drives: 09' 135i 6AT FBO - MHD Tuned
Join Date: Sep 2011
Location: DFW

iTrader: (5)

is your a/c on? if so turn it off and see if still makes the sound. Inspect your belts too... sounds like a rotating noise to me.