Had a quick look at some diagrams. Looks like jus 2 cats then 2 back boxes then the merge for the single exhaust tip.
Cats could be in the way out or could have been replaced with sports cats (or even removed...) which would likely trigger a post cat o2 error.
@danb started
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Had a quick look at some diagrams. Looks like jus 2 cats then 2 back boxes then the merge for the single exhaust tip.
Cats could be in the way out or could have been replaced with sports cats (or even removed...) which would likely trigger a post cat o2 error.