BMW 3-Series Forum (F30 / F32) | F30POST - View Single Post - CHALLENGE - F30 335 - HFC and Catless Downpipes - Now Released! - Pics inside -

PeterM · 02-01-2013, 10:12 PM

For the catless downpipe can't we just put a sparkplug non fouler so the O2 is not in-stream of the exhaust and not throw any codes. I used to do this on my vw and worked like a charm.

02-01-2013, 10:12 PM	#113
PeterM Private First Class Drives: bmw 335i Join Date: Oct 2012 Location: United States Posts: 155 iTrader: (0)	For the catless downpipe can't we just put a sparkplug non fouler so the O2 is not in-stream of the exhaust and not throw any codes. I used to do this on my vw and worked like a charm. __________________ 2013 EB2 335i 6MT