Pro-M Racing Mass Airflow Sensors are individually calibrated for their intended application. Pro-M calibrates their MAF sensors within two percent of the production baseline curve. That's 3 times tighter than the factory sensor's tolerance! As an added bonus, a transfer function sheet is provided with each sensor. This is invaluable information should you desire to have your ECM professionally tuned.

Meters are available in a standard or Cold Air Tuning variation. Standard meters should be used in applications with no cold air kit or air intakes that do not ingest air from outside the engine compartment. Cold Air Tuning meters feature a special calibration to be used with functional cold air kits. Click to learn more about Cold Air Tuning.