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Old 11-15-2012, 03:06 AM   #1
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Join Date: Oct 2012
Location: New york
Posts: 1
My Ride: 02 m3
Weather change, supercharger sound???

I noticed that since the weather has got cold, on cold starts the engine would make a noise something like a supercharger & goes away when it's warm. I'm thinking its the pulley but not sure which one. Any thoughts?
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