BMW M3 Forum (E90 E92) - View Single Post

mikefil128i · 01-14-2019, 03:40 PM

Hey guy. From what I heard you swap out exhaust to stock (for the cats and readiness) and swap over to stock map to pass emissions. That's what ESS told me.

01-14-2019, 03:40 PM	#2
mikefil128i Private 9 Rep 73 Posts Drives: 2011 BMW M3 Join Date: Mar 2013 Location: New England iTrader: (0)	Hey guy. From what I heard you swap out exhaust to stock (for the cats and readiness) and swap over to stock map to pass emissions. That's what ESS told me.
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