BMW 3-Series (E90 E92) Forum - View Single Post - Superknock Code, Rough Cold Idle, Shadow Codes

mehr · 10-10-2018, 01:28 PM

Thanks for the suggestion!

I heard about disconnecting the after-cat O2 sensors, but don't the pre-cat O2 sensors affect AFRs?

10-10-2018, 01:28 PM	#3
mehr New Member 2 Rep 8 Posts Drives: E92 M3 Join Date: Sep 2017 Location: Canada iTrader: (0)	Thanks for the suggestion! I heard about disconnecting the after-cat O2 sensors, but don't the pre-cat O2 sensors affect AFRs?
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