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NEED HELP - Additional ENGINE NOISE between 3600 - 4000 RPM.
Day one from bone stock to today in its modified form the car has always had additional engine noise between 3600 - 4000 RPM. The harder your on the pedal between that range, the more noise. Any ideas what it could be?
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2009 E92-M3 Alpine White, M-DCT
DINAN 3.62 Diff | DINAN ECU Flash | DINAN Intake | DINAN Throttle Bodies | DINAN Exhaust | CF Roof | CF Mirrors | CF Kidney Grills | CF Hood Vents | CF Fender Grills | CF Rear Spoiler | CF Front Spoiler | VMR 710 Wheels
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