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SPD Downpipes and CEL
Looking for advice or prior experiences. I have an 18 Expy with 98,000 miles. I had been experiencing intermittent P0420 codes for over a year. Clearing the code would buy me 3-4 months without a CEL. In April this year, the light came back on several times after resetting. After...- cribby22
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- Forum: 4th Gen - 2018 - 2024
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