Thread: Does anyone have experience with this engine "whistle" sound?
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      10-14-2017, 06:05 PM   #5
ciges
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Drives: 2008 E90 M3 IB SLICKTOP 6MT
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My engine whistles too,changed all serpentine belt pulleys and tensioners,power steering pump,different intakes and air filters and it still does it. I guess it is normal.
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