VSTM Full Chip Saving 15% Fuel ECOOBD2 NitroOBD2 Chip Tuning Box ECO OBD2 Nitro OBD2 For Diesel & Benzine Engine Plug&DrivePlug and Drive EcoOBD2 Economy Chip Tuning Box for Diesel Cars 15% Fuel SaveCertificates : CE / FCC / RoHSIt works based OBD2 protocols as remaping the Car's computer ECU. After driving 200 km road total, EcoOBD2 adjusts itself to the car, according to the drivers' habits and always keeps remaping the ECU to save fuel lower and immission.What does EcoOBD2 make?According to your driving habits, EcoOBD2 makes new map in the car's computer ECU for the vehicle's lower fuel consumption. As you driving much more KM/Mile, EcoOBD2 renews the map and adjusts itself to match your car perfectly for more fuel saving.What is EcoOBD2 Chip Tuning Box?