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Old 10-01-2012, 04:12 PM   #5
Registered User
Join Date: Jan 2012
Location: Londonderry
Posts: 280
My Ride: 04 325xi
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?
mattfarrington is offline   Reply With Quote