Vesc board on ebike

Good day ,  i started a new project based on vesc board. Now i use a langfeite t8 , that Is a e-bike with two motors with 1300w each other. I buyed a ubox from spintend site and i think that this board Is a good prduct with 75 v and two different output for the two motors . Maybe i wrong somewhere with the configuration of motors, but there Is something that doesn t turn. As i Say the motors are inrunner type without hall sensore and from datasheet thet must give 1300w with countinuosu Power and 1800w with peak Power . I set medium inrunner type, but when i run, i see that the output Is 2400w because when the software calcs the Fox parameters, find 90A instead 40A. If i use larger Major to 6kg motors, i found 55A that maybe Is correct for the peak motor , but the performances are very lower; they are incompatibile with the performances that i had with the original analogic board. 

Then i try another test, i increase the current from 90 to 130A. The performance in this case are very similar to the original board, but the ubox cuts the Power After some meters.....

Amy ideas Boys...thanks to everyone