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Old 05-05-2013, 02:18 PM   #18736
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Join Date: Sep 2012
Location: Virgo Supercluster
Posts: 8,024
My Ride: 2004 330Ci OBM
Originally Posted by BBBoy323i View Post

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secondary air pump. runs when the car just starts and is cold. It's an emissions thing. You moved the camera really close the SAP during the film and the sound got very loud. Sounds like that's where it's coming from.
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Last edited by WDE46; 05-05-2013 at 02:19 PM.
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