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      12-26-2012, 05:27 PM   #5
Drives: 2010 135i
Join Date: Mar 2010
Location: Nor Cal

Posts: 2,637
iTrader: (1)

That noise is coming from your boost solenoids. I had the same thing happen to me, but the noise went away before I could replace them, if it persists, and you happen to throw a 30FF under boost code, i would replace your boost solenoids.

They're about $100 each

thanks to MGallop
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