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Thread: Air intake?
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Old 10-25-2012, 11:17 PM   #6
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Join Date: Jul 2011
Location: Connecticut
Posts: 1,112
My Ride: 05 M3
It is probably a turbo blow off valve. It releases the boost pressure when you let off the gas. Most oem ones are very quiet,but you can R!ce it up...I mean change it out to make different sounds. Doing that is an attempt to mimic serious high performance high boost engines.

sent from my ATARI sc1224
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