The $D8 definition file I use is from TunerCats, which does not have a defined Constant for DRAC vs. Magnetic.

Possibly TunerCats can provide an updated $D8 definition file with a defined Constant for DRAC vs. Magnetic?

Recently TunerCats helped me with an updated $4E definition which now defines parameters for Air Diverter.

TunerCats is not freeware.