BMW M2 Forum - View Single Post - Milltek exhaust

doughboy · 05-23-2019, 03:47 PM

Yep "cat back" means OPF back.

But OPF is the most restrictive part of the system. I've added OPF delete with hi flow cats in place of OPF. No titting around and no CEL.

No need for DPS unless you want stage 2 power.

05-23-2019, 03:47 PM	#86
doughboy Major General 1545 Rep 8,972 Posts Drives: 2018 M2 Comp 6MT Join Date: Jan 2009 Location: UK iTrader: (2)	Yep "cat back" means OPF back. But OPF is the most restrictive part of the system. I've added OPF delete with hi flow cats in place of OPF. No titting around and no CEL. No need for DPS unless you want stage 2 power.
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