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Old 10-01-2012, 05:08 PM   #6
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Join Date: Apr 2008
Location: Boston
Posts: 4,971
My Ride: 2003 325xi
Originally Posted by mattfarrington View Post
Sometimes when I turn my car off, I hear a release of air pressure from under the hood.
I assume it's the brake booster, but is it good/bad?
May be an issue with the CCV. Read some threads on that.
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