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Old 02-05-2013, 10:24 PM   #22
Registered User
Join Date: Mar 2012
Location: York, PA
Posts: 44
My Ride: 330ci
Originally Posted by jtshawtek View Post
i did no modifications. just put a k & n filter instead of factory filter.
Replace your belts and pullies, it's only $160 if you use all Dayco parts from Advance...

I had a similar squeal and then it turned into only squealing around 1200 - 3000 rpm at light to moderate throttle sounding like a supercharger. I changed my belts and pullies (2 ended up being bad) and now it's silent.

My CCV went bad last week and leading up to it, it didn't make any weird noises like this. Back in the summer/fall it did moan sometimes when shutting off the car instead of a clean hiss indicating it was about to fail/getting clogged.
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