BMW 3-Series (E90 E92) Forum - View Single Post - Why is My Exhaust Butterfly Valve Permanently Open! BMW E90

E90aL · 11-05-2010, 02:46 PM

i've always had the same question but during deceleration i would hear a rattle from the flap. I unplugged the connector and now i dont have to worry about rattles.

11-05-2010, 02:46 PM	#10
E90aL Banned 15 Rep 324 Posts Drives: n52 Join Date: Jul 2009 Location: Arcadia iTrader: (4)	i've always had the same question but during deceleration i would hear a rattle from the flap. I unplugged the connector and now i dont have to worry about rattles.
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