Quote:
Originally Posted by JesseE
I've noticed with my borla uel... i get a cel for a day or 2... then cel goes off for 3-4 days, then it will come back on for a day again, then off for 3-4 again... It's been very consistent the last 3k miles i have put on the borla header
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Have you been checking/clearing it with a code reader to confirm it's P0420 or P0430 and not something different?