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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 > Need help identifying noise



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      05-23-2012, 01:13 AM   #1
Proper Motion LLC
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Need help identifying noise

The screechy and eery "oooooo" noise alternates back and forth when driving.

Also not sure if related, but I have a boost leak which is very noticeable in the butt dyno, and car is throwing boost leak code (P30FF)



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      05-23-2012, 01:42 AM   #2
Ilma
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Kinda reminds me of this
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      05-23-2012, 10:16 AM   #3
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^ lol
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