Eco OBD OBD2 Economy Fuel Saving Tuning Box Chip for Diesel Cars to Increase Power High Quality Color: Red Models for diesel vehicles Voltage: 9-12V Working temperature: 0~50°C Conversion: 1cm=0.39inch, 1inch=2.54cm EcoOBD2 is very easy to use: Plug the EcoOBD2 into the car's OBD2 connector, turn the ignition on for 30 seconds, then start the engine. The EcoOBD2 setting is optional and best suits your car. Even if the parameters of each vehicle are different, additional tuning may not be required. EcoOBD2 will recognize your vehicle and your driving habits after approximately 200km/150 miles of driving, then adjust itself to perfectly match your car. EcoOBD2 is easy to install. Just plug it into your car's OBD2 connector. EcoOBD2 works on all cars from 1996 to present. Included package: 1x booster