Originally posted by dantastic
there is only one 02 sensor in the header, and one in the cat if youre obd2. the header should have come with an extension harness so u could use the stock o2 sensor in the new location
Yeah, this post confuses me without knowing what car we're talking about. I don't know of a header that has 2 O2 sensors in it... but I don't know it all either.
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