I don't know what is wrong with my Impulse 31 V2, I tested with Miss Geico 1500 KV motor, x642 and 6S, top speed was 32 mph.
My Miss Geico V2 with same parts (I'm mean physically same propeller, batteries and motor) does 48 mph before it goes airborne.

Is Miss Geico hull that much better or am I missing something ?
I'm not 100 % sure that my ESC programming succeeded, especially the linear throttle curve, is there any way to verify that ?