I'm not quite sure I understand fully. You want to make your electronic speed control (ESC) not have full throttle? There was maybe only one speed controller that I seen where you can set the maximum throttle or should I say limit how much power the motor can receive. I don't know the brand of it because I stumbled upon it when reviewing something else. The easiest way to limit throttle is using a transmitter's end point adjustment (EPA), that is of course if your transmitter has EPA for steering and throttle.