Thread: Downpipe with no tune??
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      05-11-2021, 04:13 PM   #7
BMWILUVU
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Quote:
Originally Posted by Bay23 View Post
From reading other posts some people have had good experience with the O2 spacer avoiding the CEL, Im not sure about longevity of keeping it off though.
I had an elbow O2 and never got a CEL catless.
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