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      12-03-2012, 04:56 PM   #1
Dmacc
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Drives: 2010 135i
Join Date: Mar 2010
Location: Nor Cal

Posts: 2,634
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Strange Buzzing noise - 30FF related?

Today I got my first 30FF underboost code. I've check my DV's, my charge pipe connections, and to see if there were any cracks in my vacuum lines and so far from what I've seen everything is okay. The car is a 2010 with 34k miles on it, and doesn't see that much weather change where I live, so the vacuum lines are the least of my worries really.

My main concern was this noise I was getting from the hot side, where the vacuum lines are headed. Here is a small video I took of the buzzing noise.



Any thoughts on what the noise could be? It isn't constant, sometimes it is there at idle, and other times it isn't at all.
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thanks to MGallop
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