BMW 3-Series (E90 E92) Forum - View Single Post

Dan335i · 02-21-2009, 01:45 PM

Its a waste of time.You will only hear the exhaust being louder during cold start up.I did it and later that day went back to original.No extra power or sound unless its cold start idle.Thats what i experienced anyway.

02-21-2009, 01:45 PM	#38
Dan335i Lieutenant Colonel 32 Rep 1,786 Posts Drives: 07 335i coupe 6MT,w/sp. pack. Join Date: Oct 2007 Location: orange county NY iTrader: (2)	Its a waste of time.You will only hear the exhaust being louder during cold start up.I did it and later that day went back to original.No extra power or sound unless its cold start idle.Thats what i experienced anyway.
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