Available for any vehicle equipped with an 02 sensor the new JET Air/Fuel Monitor is designed for the driver who wants to monitor engine efficiency and fuel mileage. The unit features a backlit LCD screen and 8 different monitoring screens to choose from including air/fuel ratio and 02 voltage. This information can be used to fine tune the vehicle for the best performance and mileage. The JET Air/Fuel Monitor ties in with the original stock 02 sensor on any vehicle that is equipped with one.