This 50-State Legal, OBD-II compatible Mass Airflow Sensor features 47% more airflow capacity than the stock sensor and state-of-the-art hybrid electronics. The advanced, active electronic module packaged within the sensor provides improved control of both ignition and injector timing, contributing to a performance gain of 10-15 horsepower at the rear wheels. Easy Installation & does not affect mileage or driveability under normal conditions.