Catless Downpipe and CEL -- limp mode?

mayno · 08-31-2020, 03:39 PM

Hi guys,
have a 430i and will install the catless downpipe in a few days. i use a JB4 and my understanding is that it won't suppress the CEL for not having a cat.

that said, will the CEL also cause limp mode or will I still have full power? thanks.

F36 Corey · 08-31-2020, 06:57 PM

The cel won't cause you any problems otherwise then being annoying! Your car will still run at full power the only reason the cel will be there is because of the o2 sensors.

08-31-2020, 03:39 PM	#1
mayno Captain 72 Rep 613 Posts Drives: 2007 335i / 2018 BMW 430i Conv Join Date: Dec 2006 Location: So Cal iTrader: (0)	Catless Downpipe and CEL -- limp mode? Hi guys, have a 430i and will install the catless downpipe in a few days. i use a JB4 and my understanding is that it won't suppress the CEL for not having a cat. that said, will the CEL also cause limp mode or will I still have full power? thanks.
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08-31-2020, 06:57 PM	#2
F36 Corey New Member 8 Rep 18 Posts Drives: 2017 430i Join Date: May 2020 Location: Florida iTrader: (0) Garage List 2017 BMW 430i Gran ... [0.00]	The cel won't cause you any problems otherwise then being annoying! Your car will still run at full power the only reason the cel will be there is because of the o2 sensors.
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