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

spec 123 · 07-17-2008, 02:36 PM

dOING IT FOR A SHORT PERIOD OF TIME MIGHT BE OKAY BUT LONGER THAN A WEEK OR FREEWAY DRIVING WILL CAUSE DAMAGE TO YOUR CATALYTIC CONVERTORS. BMW ADDED THIS DUE TO THE NOISE REDUCTION BUT ALSO THE DUAL PIPES ON THE 335 TAKE TURNS RELEASING EXHAUST FUMES. tHE AIR FUEL MIXTURE MIGHT GO LEAN OR RICH AND CAUSE YOUR CATS TO BURN. TRUST ME I KNOW

07-17-2008, 02:36 PM	#161
spec 123 Lieutenant 25 Rep 589 Posts Drives: 335i cpe Join Date: Apr 2008 Location: LOS ANGELES iTrader: (1) Garage List 2008 335 [0.00]	be careful!!! dOING IT FOR A SHORT PERIOD OF TIME MIGHT BE OKAY BUT LONGER THAN A WEEK OR FREEWAY DRIVING WILL CAUSE DAMAGE TO YOUR CATALYTIC CONVERTORS. BMW ADDED THIS DUE TO THE NOISE REDUCTION BUT ALSO THE DUAL PIPES ON THE 335 TAKE TURNS RELEASING EXHAUST FUMES. tHE AIR FUEL MIXTURE MIGHT GO LEAN OR RICH AND CAUSE YOUR CATS TO BURN. TRUST ME I KNOW __________________ steve
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