SCT’s Big Air MAF Meters are great for modified vehicles where the stock mass air meter “pegs” due to increased airflow. SCT’s Big Air MAF Meters feature OEM quality calibration for factory level drivability, repeated accuracy, and reliability. The BA500 Slot Style Big Air MAF supports 400rwhp to 725rwhp with centrifugal blowers and 400rwhp to 825rwhp with Roots style blowers.