BMW M3 Forum (E90 E92) - View Single Post

iTz oN!!! · 07-07-2010, 05:06 AM

You don't need to remove the X-pipe for smog. As long as you dont remove the cats up front and you dont have CEL you are good. The resonator won't effect smog.

07-07-2010, 05:06 AM	#4
iTz oN!!! Private First Class 11 Rep 113 Posts Drives: e92 m3 Join Date: Jul 2010 Location: cali iTrader: (0)	You don't need to remove the X-pipe for smog. As long as you dont remove the cats up front and you dont have CEL you are good. The resonator won't effect smog.
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