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The EcoOBD2 is a plug-in box that connects to a gasoline car's OBD2 diagnostic port and claims to adjust fuel injection timing and quantity based on live ECU data. It installs in seconds, needs no wiring, and unplugs to restore factory settings. It is aimed at drivers of 1996-and-newer gasoline vehicles who want to try cutting fuel use without permanent tuning. Independent testing of OBD2 piggyback tuners like this has generally found little or no measurable fuel savings, so treat the claims with caution.
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The EcoOBD2 is an OBD2 plug-in chip tuning box for gasoline vehicles. It reads real-time data from the car's ECU and adjusts engine parameters such as fuel injection timing, boost pressure and fuel quantity. It adapts to the driver's habits over roughly 150-200 miles (about 200 kilometers) of driving.
It plugs into the standard OBD2 diagnostic port and draws power from that port. It operates within OEM tolerance limits. The change is not permanent: unplug the device to restore factory settings.
To set it up, turn the ignition off and remove the key, then plug the device into the OBD2 port, usually under the dashboard. Turn the key to the first ignition position without starting the engine. Press and hold the reset button for 5 seconds, then release it. Wait 30-54 seconds for the device to connect to the ECU, then start the engine.
