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2004 Acura RSX Aftermarket Exhaust Passing Smog Check

2004 Acura RSX Type S. would my aftermarket exhaust pass smog or do I need my OEM catalytic converter?

I have an after market full piping exhaust on my car and I need to smog my car in June. My check engine light came on when I put on that exhaust. I was wondering if I need to put back my stock OEM exhaust inlcuding my OEM catalytic converter in my car in order to pass smog?. Or can I just connect my OEM catalytic converter and keep the aftermarket muffler in order to pass smog? Thank you

Answer:

The aftermarket muffler (post-CAT) can pass the smog check, the Catalytic Converter however must be OEM. Also, since the check engine light is now on, after installing the OEM CAT you'll need to clear your Acura RSX's trouble code(s) and ensure the code(s) do not return. You'll also need to drive your Acura for 1-2 weeks (apprx 200 miles) in order to "complete" the emission monitors. Clearing the trouble code(s) will also erase the emission monitors, and your Acura RSX can not pass the smog check with "incomplete" emission monitors. An inexpensive trouble code scanner will indicate which Monitors are complete and which monitors are not. posted by SmogTips Support

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