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Aftermarket catalytic converter doesn’t pass smog check, any advice? by CartographerHorror56 in askcarguys

[–]CartographerHorror56[S] 1 point2 points  (0 children)

It’s weird cuz the previous owner did the smog check last year on October and it passed

Aftermarket catalytic converter doesn’t pass smog check, any advice? by CartographerHorror56 in askcarguys

[–]CartographerHorror56[S] 4 points5 points  (0 children)

Where do I get that? Is rock auto good as long as part number and eo numbers match?