BMW 3-Series (E90 E92) Forum - View Single Post - DIY: 335i Exhaust Sound Mod. Better, and even easier than golf tee mod.

Bmwnsxr · 01-18-2012, 07:16 AM

This sounds great but has anybody had any problem during emission test? I would love to do it also to my new 335xi, but just concern about harming the engine and failing the emissions. Please let me know If i am over thinking this. Thanks guys

01-18-2012, 07:16 AM	#492
Bmwnsxr New Member 0 Rep 9 Posts Drives: 335 xi white Join Date: Jan 2012 Location: Mount Airy iTrader: (0)	This sounds great but has anybody had any problem during emission test? I would love to do it also to my new 335xi, but just concern about harming the engine and failing the emissions. Please let me know If i am over thinking this. Thanks guys
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