Remote Tuning: Master/ Slave

The Master/Slave system allows tuners to create a tune file that another user can write to a vehicle but not view or edit. 

Licensing Requirements

• If the tuner is using an MPVI:
  • Both interfaces must license the vehicle.
• If the tuner is using an MPVI2 and VCM Suite 4.xx or later:
  • Only the interface writing the tune to the vehicle needs to license it.

Assigning Master and Slave Interfaces

In VCM Editor, go to Tune Details > Remote Tuning to assign Master and Slave interfaces.

• Master Tuner ID:
  • Your Tuner ID. Any VCM Editor with an application key for this Tuner ID will have full access to open, view, edit, save, and flash the file.
• Slave Interface IDs:
  • The MPVI serial numbers of interfaces that should have write-only access.
  • These interfaces can only flash the file to a vehicle but cannot view or edit it.
  • The serial numbers can be found on the back of each interface.

How to Use the Master/Slave System

1. Set Up the Master/Slave Access

   • Click Insert or Change to enter your Master Tuner ID.
   • Enter one or more Slave Interface IDs (MPVI serial numbers), with one serial number per line.

2. Clear the Master/Slave Access

   • Click Clear Master/Slave to remove all assigned IDs.

Example Scenario

• Master Tuner ID: 0000999999 → Full access to view, edit, save, and flash.
• Slave Interface IDs: 9898989898 and 9797979797 → Can only flash the file, no editing or viewing.

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