Service engine soon with UR hfc- Help!
Once again I need your help guys, i have a UR hi flo cat, a UR performance muffler and took off my stock resonator. My check engine light had lit up 3 times since i've installed my hfc (i've installed the mufflers a year before). I used the COBB to reset it (P0420), but is there anything else i can/ i have to do to keep it (CEL) from lighting up again? Appreciate all the advices uv given and always will for the upcoming ones. Thanks!!!
PS. I've only had the hfc for about 2 months/2,000+ miles
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