John,
Speed Step Selection: The default speed step is 100 as shipped. The momentum and stall features are not applicable, and do not operate. 100 speed steps should be used for best performance.
32 speed steps should be used when double heading this locomotive with any older production Atlas locomotives (EOB-equipped). Note that the Cruise Feature must be disabled in ALL units when doing so.
To switch Speed Steps do the following:
Activate 32 Speed Steps: AUX1 + 0 + AUX1 + 0 + BRAKE
Activate 100 Speed Steps: AUX1 + 0 + AUX1 + 0 + BOOST
Note: The speed step selection is stored until changed, and survives power cycling.
If you want information on the "Nudge" process to speed up a slower engine in a consist, request it in this thread.
Sincerely, John Rowlen