CEL light cancel for exhaust tuning
Discussion
You can either buy spacers which push the downstream Oxygen sensor further away from the flow of the exhaust gases or you can buy a mini cat. I have used both successfully. In the case of the former you may need to use more than one spacer and/or a 90 degree elbow. It can take a bit of trial and error. See this thread for information https://f30.bimmerpost.com/forums/showthread.php?t...
BAMoFo said:
You can either buy spacers which push the downstream Oxygen sensor further away from the flow of the exhaust gases or you can buy a mini cat. I have used both successfully. In the case of the former you may need to use more than one spacer and/or a 90 degree elbow. It can take a bit of trial and error. See this thread for information https://f30.bimmerpost.com/forums/showthread.php?t...
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