It's related to a signal from one of the DME's to Kombi and relayed to HU_NBT. I stumbled upon the programming values in some of the btld, swfl, and uds_job files. Was totally zoned in on resolving GFHB and forgot to make a note of which files these were in.
There are setting for brand BMW and Rolls Royce, motor type and power class, numerical output values ("actual" and power reserve in % for RR), as well as Performance Upgrade settings.
I promise to find them again and post them up. If anyone can determine a way to use them or have a dealer reprogram, many of you will be happy for 15 mins
