adjustable throttle EPA on Digital Surface 2.4 radio

[jackxx48]

is there a model of a Digital surface radio 2.4 in the market that you can adjust the throttle EPA up or down when running and you have not to stop to do it , because im am racing in breakout and i would like to have the abillity to adjust the throttle EPA if i am to slow or to fast because we can lost turns if we are to fast and if we are to slow it is not better , thank you.