The current password is (2962). For the volt Bigfoot,C1 Controller. Could be the same for the rest of them. (1919) is the Canadian code. You can derestricted them by removing the metal cover under the crank, in order to expose the bike computer. There will be a wire that loops from and back into to computer, simply unclip the centre and the motor will be derestricted. When you get into the controller settings go to (6)sys system settings and set max speed to 40 . set the SPD to 4. There is an SPD setting in system settings and one in SPD settings. Set them both to 4. The speedo will will display 1/4 of your speed, but this will add a little speed than if you left the SPD's on 1. The throttle will work from 0mph to the motors limit speed. You can set the pedal sensor to 9. This will have the motor kick in sooner when you start pedaling. It is best not to change the other settings in case you burn your motor out. But the voltage and current(Amps) can also be increased via the bike controller. This will give more power but will take the motor pasted its designed tolerances.