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Catalyst Codes
My smog is due next February, and today P0420 and P0430 popped up when the monitoring finally completed.
Last smog I had a P0430 that I successfully got rid of using a can of CRC guaranteed to pass, even though its not "for" catalytic converter monitoring.
Between then and now I had an AOS failure with tons of oil smoke that I'm sure didn't help the situation.
I've heard of success stories using Oxicat, O2 sensor spacers, and O2 sensor filters. What's worked for everyone here? I don't want to buy another set of converters. Is there an OTS tune which can trick the readiness sensors? How do people with catless headers pass?
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Threaded Mode
