To use a newly updated mod-file db when your OFT has already been installed onto your car:
- Successfully load a new Mod-File DB to your OFT.
- Select Upload Data tab in the left menu pane
- Press the red X next to any tune files loaded in the mod-file slots
- Confirm that you would like to delete them.
Disconnect the OFT from the PC, go to the vehicle.
- Select TUNING
- Select WRITE.
Tune files should auto-generate from your new mod-file database if your calibration code matches a known OEM ECU tune in the DB.