The ECU cloning process involves copying software and data from one engine control unit to another. The steps are:
Reading the original ECU – Connect the original ecu to a diagnostic programmer to read its software and data.
Saving the original ECU data – Dumping the ecu software and data to a storage device.
Writing data to the replacement ECU – Transferring data from the original ecu to the replacement unit, known as flashing.
Installing the replacement ECU – Connecting the replacement unit into the vehicle, and verifying proper operation.