Please review the instructions on how to download Adobe Acrobat files . There are several different type of mass airflow sensors. Most stock GM automotive mass airflow sensors are 77mm in inside diameter and the Granatelli automotive mass airflow sensors are 81mm-90mm. The advanced, active-electronic module packaged within the sensor provides improved control of injector timing and ignition timing. Typical horsepower gains are approximately 10-15 horsepower at the rear wheels.
Customers usually exceed our claims.
They are chassis dyno proven and flow bench calibrated to give your car maximum performance. Typically, from 2000 rpm throughout the entire power band. Passing power and throttle response are significantly improved. While we do not sell our mass airflow sensors as mileage improving devices, it typically requires less throttle angle to achieve the same speed. Therefore, you will see an increase in mileage if you maintain a calm driving style.