Trip computer This innovative 4-in-one automotive computer from Leagend is exactly what is needed for real-time engine monitoring, failure prevention and trip tracking. The compact and intelligent gadget includes 4 most useful modes:trip computer, digital gauges, scan tool and car black box.< One year warranty< Upgrade from internet Trip Computer: The Turbo Gauge III is a compact automotive computer designed to monitor information about your vehicle in real time. It will display such useful information as average trip MPG(miles per gallon), tank MPG, average speed per trip, average speed per tank of gas, miles to empty, miles driven on tank, and more.Maximum SpeedAverage SpeedDriving TimeDriving DistanceFuel UsedTrip Fuel EconomyDistance to EmptyTime to EmptyFuel to EmptyDigital Gauges: The Turbo Gauge III can be configured to measure and monitor up to four different sets of information simultaneously, providing real-time engine performance analysis, allowing you to adjust driving behavior and save gas.Vehicle Speed (MPH)Manifold PressureBattery VoltageEngine LoadFuel PressureThrottle PositionIntake Air TemperatureIgnition TiminEngine Speed (RPM)Closed/Open LoopFuel TrimWater TemperatureO2 SensorEngine PowerEnhanced DataScan Tool: The Turbo Gauge III will also work as a scan tool that is able to help you troubleshoot problems of all OBD2/EOBD compliant vehicles. < Works with all 1996 and later OBDII compliant vehicles < Reads & clears trouble codes < Easily determines the cause of the “Check Engine Light ( MIL)” < Turns off Check Engine Light (MIL), and resets monitors < Views freeze frame data < Displays monitor and I/M readiness status(emissions) < Retrieves vehicle information (VIN, CIN and CVN) Car Black Box: The Turbo Gauge III will be able to save up to 300 hours of your driving data. It works as a vehicle black box to store every trip you make. The information it records includes: < Time and date for each trip < Distance travelled each trip < Maximum speed during trip < Time overspee< Average speed< Average fuel consuption< Number of times of extreme acceleration during trip < Number of times of extreme deceleration during trip < Numbers of hard accelerations and brakingThe Turbo Gauge III is perfect for: < Auto enthusiasts, hobbyists and DIYers < Drivers who care for engine performance and fuel economy < Parents of young drivers < Business owners