The JET Powr-Flo Mass Air Sensor delivers improved horsepower, torque and mileage from your car, truck or SUV by simply replacing the restrictive stock mass air sensor. The factory sensor not only is a major restrictive point in stock intake systems, but it also limits the full potential of aftermarket cold air intake systems. The flow bench tested design of the JET Mass Air Sensor provides airflow increases of up to 45% and installs in 10 minutes or less. Compatible with other aftermarket upgrades such as computer upgrades, cold air intakes, TBI spacers, free flow exhaust systems, etc. Instructions Up to 13 more hp over stock mass air sensor and Improved Mileage Most of JET Powr-Flo Mass Airflow Sensors are legal for use in California and other states that have adopted California emission standards under C.A.R.B. E.O.# D-234-11 & 13 (To verify if this part # is included please call (800) JETCHIP )