Originally Posted by ducati955
i will def check, where exactly is this "flap" can i see it easily? i mean maybe its a lil louder, but i would love to make sure the flap is closed, thanx!
Just use a flashlight and look straight into the driver's side exhaust tip....you can't miss it.....if mod is working correctly the "flap" should remain open all the time.
2007 335i 6-SPD Sport, Jet Black, Coral Red, Premium, NAV, Cold Weather, Park Distance & Comfort Access, Active Autowerke, Clear Reflectors
IFORGED Essen, Flat Black w/Polished Lip, General Exclaim UHP 19 x 10 275/30/19 (ZERO RUBBING) and 19 x 8 235/35/19, H&R Sport Springs