What you need to proceed the function
Blank ECM or used control unit
Valid VIN, ECM part number ( see picture )
Blank ECM Flash
This function is used to flash a new blank ECM.
By this function you can set a VIN number and after flash the selected calibration according to the VIN number.
It can be also done for the used ECM.
If this function is successful you can do full range of the DIAG4TUNE functions.
Setting after Blank ECM Flash