BMW 3-Series (E90 E92) Forum - View Single Post - How do I open the flap/valve in my left exhaust?

MPower10s · 07-25-2011, 09:14 AM

is there such a thing on the 328? i remember my mom's e46 330ci had a butterfly valve that would open at high rpm's but you could also get under the tailpipes and open it yourself with a screwdriver

07-25-2011, 09:14 AM	#12
MPower10s Second Lieutenant 145 Rep 234 Posts Drives: X7 M50i Join Date: Jul 2011 Location: Wellington, FL iTrader: (0) Garage List 2011 BMW 328i M-Sport [9.00]	is there such a thing on the 328? i remember my mom's e46 330ci had a butterfly valve that would open at high rpm's but you could also get under the tailpipes and open it yourself with a screwdriver
	Appreciate 0 Quote