BMW M3 and BMW M4 Forum - View Single Post - How to pass emissions with catless downpipes

ByeFelicia · 01-24-2020, 10:06 AM

RyF80

What does that mean, you just bought and flashed a custom tune just for emissions and you dont gotta touch any hardware?

IF so, how much was the custom tune?

01-24-2020, 10:06 AM	#27
ByeFelicia Captain 399 Rep 852 Posts Drives: F80 Join Date: Sep 2014 Location: . iTrader: (2)	RyF80 What does that mean, you just bought and flashed a custom tune just for emissions and you dont gotta touch any hardware? IF so, how much was the custom tune?
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