With the most recent K-Suite update, it will be possible to work on bench with K-TAG without opening the ECU: remap directly through the connector!
If you have an active subscription on K-TAG Master or Slave with Tricore-ST activation, you will access to the new activation TSM (Tricore Service Mode) for free.
The ECUs of Opel, Hyundai, Mercedes, but also many other brands like VAG, Ford, BMW, Land Rover, Kia, now, can be read and written on the bench directly through the connector, without opening the ECU!