Andy,
Hmmm... Perhaps the reason I didn't have to go to the same extreme as you is because my circuit is powered by my Futaba ESC, which also powers the (Futaba) receiver and steering servo. The battery eliminator seems to be pretty robust, barely dipping below 6V.

I built the system this way so that I could easily put it between the receiver and throttle servo of a nitro powered car.

I definitely need to shoot some video of this car for you! It worked out EXACTLY as I planned. Version 2 will have a couple of 25 turn trimmers for tuning the TCS delay and wheelspeed differential values for different surfaces without reprogramming.

-Andy