BMW M2 Forum - View Single Post - Evolution Racewerks Catted M3/M4/M2 Comp Downpipe

Conissah · 02-21-2020, 07:49 PM

Oh my, those are absolutely gorgeous. Do high flow cats require a tune, or can the stock ECU account for them? Seems that the stock stuff is pretty good at adjusting.

02-21-2020, 07:49 PM	#5
Conissah Major 1576 Rep 1,049 Posts Drives: 2018 M3 Join Date: Oct 2019 Location: Charlotte, NC iTrader: (1)	Oh my, those are absolutely gorgeous. Do high flow cats require a tune, or can the stock ECU account for them? Seems that the stock stuff is pretty good at adjusting.
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