What is meant by a MAF-based tune or system?
Our cars come from the factory with a device called a Mass Airflow Meter (MAF) that measures the air entering the engine. Even minor mods like air-lids and other “cold air kits” alter the course of flow through the MAF which skews the factory’s calibration. Most of the commanded fueling that a car uses comes directly from this measure of airflow. Most cars will be tuned using the MAF for accuracy of fueling and drivability.
