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Old 02-05-2011, 06:28 AM
dtc100 dtc100 is offline
Officially Welcomed to the 'Fest
Location: Norcal
Join Date: Jan 2011
Posts: 4,694
Mein Auto: 2011 328i
Originally Posted by Randall Fox View Post
...But if you want to search for the noise, check the air intake, as it could be channeled through it, and would explain the variable pitch increasing with engine RPM's, as it sucks more air into the engine..
Good point, people who replaced their stock intakes with the aFe open intakes don't complain about engine whine, of course they put those aftermarket intakes in to get more sound, not less
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