I dont know the VFS 2000 - I think there was a thread once...
However, I suggest you also check out the Rocket MAX from CS-electronic. It can automatic change drive frequency depending on how fast you pull the trigger.
"AFC is the active frequency control that leads to hammer hard acceleration on one hand and super smooth acting on the other. The frequency of the power FET transistors is depending on the speed of pushing the throttle stick. Fast throttle movement--> low frequency Slow throttle movement--> high frequency In the end you have more control over the car from the sticks. AFC can also be disabled. "