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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Weird whistling noise coming from engine



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      11-11-2012, 09:48 PM   #1
jdrdeer
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Weird whistling noise coming from engine

When I step on the as I get a high pitch whistling noise that comes from the engine. I hear it better with the window down. I know it isn't wind because it is only when I am accelerating. No error codes, no performance issues. Just this weird noise. What could it be???
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      11-11-2012, 10:52 PM   #2
Ferruccio
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Turbos? Turbo bearings? It would be good to try to get a recording. I hear so many whistling sounds from my engine that I just assume are normal. Did it recently start?
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      11-11-2012, 11:32 PM   #3
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stock intake?
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      11-12-2012, 09:45 AM   #4
jdrdeer
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Quote:
Originally Posted by Ferruccio
Turbos? Turbo bearings? It would be good to try to get a recording. I hear so many whistling sounds from my engine that I just assume are normal. Did it recently start?
Yes recently started
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