xr8 pro combo and it seems to have turbo or like second gear when you go to wide open? it's like it hesitates?
not my first hobbywing have sct and few stock spec so familair but baffled!!

Having turbo and boost is considered being a "mod" esc (vs. stock). Boost is just like timing for your esc. Turbo is like boost but activates at a certain rpm. You can adjust it with a program card or equivalent.