xo-1 esc in a slash 4x4

[mwe-maxxowner]

Does it just calculate the speed it thinks you are running based off input voltage and what should be stock tires and motor? If I can get full power in the slash to 50 mph with a 2650, 4s or less, and pede or maxx sized tires that would suffice until I figure out how to unlock it.

Do I need the castle link and the traxxas app and a tqi with docking base to do it?