Thread: Exhaust Note
View Single Post
      04-22-2013, 06:14 PM   #3
CombatNinja
Banned
CombatNinja's Avatar
46
Rep
1,556
Posts

Drives: e91 328i, e90 328i, e90 335i
Join Date: Feb 2011
Location: United States

iTrader: (0)

Vacuum-actuated flap valve inside the muffler to quiet the exhaust on cold start. 90% of the one I hear make noise on startup to varying degrees. Unplug the connector behind the driver's side tail light in the trunk. Now al you will hear is loud exhaust noise instead of a metallic rattle. Pick your poison.
Appreciate 0