What could you do make a electric motor go faster?

Enable It to absorb more air and gasoline. In the the end it has to have proper fuel/air ration. Also bore kits make engine bigger internally. Better spark plug lighter internal parts etc. weight is...

Go downhill

Twist the grip.

dont know, but probably, it cant be rocket science to rip the engine out and replace it with a motor, can it? try it and tell uz if it works!!!

Best place to start is with a good quality air filter, tuning the carb and replacing your piston rings, upgrading the expansion chamber will make a big difference then if you stil want more you can...