My official N54 turbo upgrade build
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02-24-2010, 04:07 PM
Drives: 340i xDrive
Join Date: Dec 2006
no siren/whine and no wastegate rattle.. and i have 39.5k extremely hard driven miles
Originally Posted by
Have you ever had any degree of siren/whine on your turbos?
2016 340i xDrive (6MT, M-Sport, etc)
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