2010 2011 BMW 5 Series Forum F10 - View Single Post

Ace333 · 12-19-2015, 07:58 PM

I am in the exhaust industry here in USA. These are active valves used for tuning and back pressure. Very common in cars these days. Especially higher end models.

12-19-2015, 07:58 PM	#7
Ace333 New Member 2 Rep 27 Posts Drives: 2012 535XI Join Date: Apr 2012 Location: Detroit, MI iTrader: (0) Garage List 2008 528XI [0.00]	I am in the exhaust industry here in USA. These are active valves used for tuning and back pressure. Very common in cars these days. Especially higher end models.
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