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      06-08-2011, 01:42 AM   #453
BMWLove86
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Drives: Alpine White BMW 335i Coupe
Join Date: May 2011
Location: CHICAGO, IL

iTrader: (2)

Just did this mod. I can tell the car sounds a noticeable deal better at cold start. I haven't driven around with it unplugged yet. There is more of a smoothness and louder sound at start. When plugged in I almost here this slight metallic rattle I guess it's the valve opening and closing or whatever. Not sure I will leave it unplugged I plan to get an aftermarket exhaust next month so we'll see. I did notice more gaeous fumes (emissions) after revving a little with the thing unplugged.