Will test pipes throw codes for the upstream o2 sensors?
Will test pipes throw codes for the upstream o2 sensors?
Running non-resonated test pipes (have been for about a year) and I am throwing the post cat sensors (that's a given) but have recently started throwing the pa200&203 or whatever they are upstream/precat sensor. Will test pipes cause this or is it an age thing? 176k miles on my 06.
Running non-resonated test pipes (have been for about a year) and I am throwing the post cat sensors (that's a given) but have recently started throwing the pa200&203 or whatever they are upstream/precat sensor. Will test pipes cause this or is it an age thing? 176k miles on my 06.
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