UltraGauge is both an OBDII Scan Tool and an Information center that displays selectable engine gauges, such as RPM, Speed, Coolant Temperature, Boost, Distance, Fuel Pressure, Mass Air Flow, and more. UltraGauge displays mileage gauges including Instantaneous MPG, Average MPG, gallons per hour, DTE and more. UltraGauge can scan, read and clear trouble codes. Just plug and go! English and Metric units are supported.