Switch Point Simulations put out a new Dash 9 pack revamping the existing models: https://www.switchpointsimulations.com/product-page/ns-dash-9-pack
"We have reworked much of the core locomotive traction, adhesion and braking simulation to be more accurate to the real thing and less bound by the antiquated base game simulation. New features include partly simulated GE Integrated Function Displays with Distance Counter, Air Brake Setup and more, a partly simulated Diagnostic Information Display (DID), reworked cab signal scripts, reworked radio scripts and more."
Schnauzahpowahz did a video going over all of it: https://www.youtube.com/watch?v=I7sOMIFj7FQ
