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      06-05-2008, 08:42 PM   #27
theanhdy
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Drives: 135i
Join Date: Nov 2007
Location: SOCAL SFV

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It's the clear bra on the side mirrors. If you put your hand out over the side mirror cover when it's whistling, the noise will go away immediately. I think this is because the clear bra on the side mirror are two pieces so the air whistles when it hits the slid and travels in that small gap
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