6Post.com | BMW 6-Series Forum - View Single Post - 2013 F13 M Sport Exhaust problems or not?

Walt White Coupe · 10-11-2016, 11:18 PM

Sounds like the "flapper" valves at the exit of the mufflers are wired open or are broken in the open position (unlikely). Mine sure doesn't do this.

10-11-2016, 11:18 PM	#2
Walt White Coupe Captain 223 Rep 738 Posts Drives: 2013 650ix Coupe, 23 C8 Vette Join Date: Mar 2011 Location: Phila, PA iTrader: (0)	Sounds like the "flapper" valves at the exit of the mufflers are wired open or are broken in the open position (unlikely). Mine sure doesn't do this.
	Appreciate 0 Quote