2010 Civic FG2 k20z3 Rough Start
Posted: Tue Aug 25, 2026 8:16 pm
I have had issues with cold starts for over a year now. Smoke tested it... no vacuum leaks. got a tune still happens replaced map sensor,O2 Sensor, ECT sensor cannot figure out what is casuing this. I have a CAI and Ktuned header with catback exhaust. Is anyone able to look at logs and calibration and see an issue?