Economy OBD-2 is a chip tuning box which can be plugged into OBD-2 connector of your car for decreasing the fuel consumption of your car. When plugged into OBD-2 connector, it receive the information from ECU. Then according to the data received, it can adjust the boost pressure, quantity of fuel, injection timing and pressure to decrease the fuel consumption. Dim: 2x1x1.5 Shipping Weight: 1oz Upsells: Dashcamera/SD Card, Flashlight