P1 start with 84 set the speed in the previous menu to 25km/h and go for a ride with a GPS readout to see how far out the lcd reading is compared to GPS. If LCD reading is lower then set P1 one digit higher and test again, repeat until they are very close. If the opposite and lcd reads high then go down a digit at a time.
P2 depends on speed sensor magnets usually 1 or 6 is the answer but if you had two motor speed magnets then set it to 2.
P3/1 current control or 0 if you prefer speed control.
P4 throttle use 0 always active illegal if post 2016 or 1 active/pedal first.
P5 10.
C1 PAS we need to know which PAS sensor you are using.
C2 0 is default motor should sound very quiet and run smoothly.
C3 Pas level 0 - 5 will auto register to the selected level every time you switch on , so if you select 3 PAS level 3 will be registered every time you switch on or 8 will use the last registered PAS level you used.
C4 is throttle speed setting. 0 no speed set, 1 walk assist or 2 spd lmt specified.
C5 current delivery 10 is max current other values reduce the max current.
C6 lcd display light brightness.
C7 Cruise leav eas 0/off.
C8 0/off it is for motor temp, there is no sensor for this.
C9 Password setting 0 off or 1 if you want ot set a numeral P/W every time you switch on.
C10 System reset. N or Y.
C11 0 LCD 3comms display used. 1 for lcd 1 or 2.
C12 controller lvc voltage leave as 4,5 or 6. Your battery BMS lvc will likely be higer any way.
C13 ABS regen leave as 0.
C14 PAS signal strength 1 weak - 3 strong.
If really lucky you may have L setting as well.
Is so leave as L1 0, L2 0, L3 1. L4 is lcd shutdown time in mins.