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sparkyg · 04-05-2012, 01:03 PM

I am pretty sure that is the turbo and the bypass mechanism for the excess boost when you cut the throttle.

04-05-2012, 01:03 PM	#2
sparkyg Brigadier General 167 Rep 3,521 Posts Drives: A6 Allroad Join Date: Sep 2007 Location: Oil Country iTrader: (5)	I am pretty sure that is the turbo and the bypass mechanism for the excess boost when you cut the throttle.
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