I put in a new exhaust from headers to muffler it has a resonator instead of a cat. First the check engine light came up because of a 02 sensor i changed that and put a new one. Went off and came back up saying its trying to find the cat how can i remove the check engine light because theres really no problem now.

Thanks,

Enzo

 

If u just want the cel off just disconnect ur battery

 

reset your ecu by disconnect negative battery cable for a few mins and reconnect.