odd "whistle" "squeel" while driving?
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06-21-2012, 03:40 PM
Join Date: Jan 2012
My Ride: 04 325xi
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Could it be the fact I have a small hole in my air box?
I did the custom airbox mod thing, the edge cracked, and I was too lazy to seal it.
It just to me, sounds more of a metal whistle, than air.
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