I suggest contacting MTU, as others have recommended. They may be able to provide more information over the phone in 15 minutes than hours of internet searching will provide. The engine OEM dealer I work for has several people on staff who will assist customers with technical issues such as these. I would hope MTU would be as supportive, especially since the engine in question is no longer under warranty.
The engine ECM communication software/hardware is probably available for purchase, however may be very costly and have limited functionality. If you have several of these engines in your fleet, it may be a worthwhile investment. To reprogram an interlock code on the engines I am most familiar with, a factory password is required. It is not uncommon for customers to bring us their own ECM for us to program, saving on labour and travel charges. We would typically charge about an hour for this, plus the fee to generate the factory password.
