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It was bound to happen. Japanese manufacturers leave ECUs open. Some US companies have made it so that you cannot modify the system of their cars. When the ECU was turned off it would reset each time to prevent modifications without a special by pass chip.
The Japanese have left this open for OBD (Sensor Testing for diagnostics by a mechanic) so that a trained mechanic will be able to screw around with the setting incase a vechicle needed it or if it was tuned with aftermarket equipment. But they dont want you to know that.
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