1. Eco OBD2 universal gasoline fuel-saving tuning box chip, plug and drive, easy to use.2. Selected high-quality material, durable, wear-resistant, can be used for a long time.3. Easy to install, it can be directly connected to the car's OBD2 interface to reduce fuel consumption.4. Adjust the boost pressure, fuel quantity, injection timing, and pressure according to the data provided by the ECU to reduce your vehicle's fuel consumption.5. It will not damage the car's engine and will not have any negative impact on the car's factory settings.Specification:Condition: 100% brand newItem Type: Economy Fuel Box ChipMaterial: ABSColor: As shownInstallation and Calibration:1. Remove the car key from the ignition.2. Find the OBD2 connector in your car and plug in EcoOBD23. Insert the key into the ignition and turn the key to the first position. (Do not start the car)4. Press the reset button for about 5 seconds, release the button and wait for about 30-54 seconds (EcoOBD2 communicates with the ECU and establishes the connection).5. Start the engine.6. EcoOBD2 identifies your vehicle and your driving habits. After about 200 km/150 miles of driving, EcoOBD2 will automatically adjust to your car to save more fuel.Package List:1 x Economy Fuel Box Chip1 x User ManualNote:This economic fuel box chip is only suitable for gasoline cars.