Home Forums Cars MAF 센서와 A/F(O2) 센서 차이점 MAF 센서와 A/F(O2) 센서 차이점 Name * Password * Email Maf: airflow going in to the motor Afr sensor: located front of the primary cat, measures air fuel mixture with exhaust gas, then sends data to ECU, controls the fueling. O2 sensor: located behind the primary cat, collects emission data I agree to the terms of service Comment