I did the 2.0t conversion, new NGKs, and Forge diverter valves about a month ago. Last week I had the resonators removed. Car drives like a dream. Yesterday the CEL comes on. Codes came back as Misfire.... 1, 6 etc. Cleared the codes, drove one day, CEL came back on again. I don't feel anything wrong, car still runs smooth, all power is there, no hesitation under full throttle, nothing. MAF is clean, air filter new. Anyone experienced anything similar ?
Car is 00 2.7 6sp and all the goodies were bought from ECS tunning. Thanks