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Old Fri, Oct-08-2010, 08:42:22 PM   #2
PenguinQX
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Yes, but on my car it's the supercharger

In all seriousness though, I never encountered this before when I was NA. Ever pop the hood to figure out where exactly it's coming from? Belts maybe? Bad belts can be noisey on startup and go silent after the engine warms up.
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2004 M3 - Carbon Black
AA Stage 2 Supercharger|AA Coated Headers |AA Exhaust|FMIC|Alcohol/Water Injection Kit|etc.
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