thanks, the engine I use is a simple modified hub, I don't see why you should use a specific ECU ... how do they differ?
it is not like a mid motor that reaches 4000rpm, currently with the control unit I use it is fine, I have only the drawback that the speed limit does not work.
I will try to change the parameter p1 but I do not know the motor data and I think it is perfectly useless to ask the Chinese for them :-( currently I have set p1 to 87 as a normal bafang bpm