Speed controller question

[hockey88fan]

I have a question regarding the speed controller on my G16. I was wondering if it possible to modify the factory controller to put out more amps to the motor? I was thinking it would be pretty neat if it was possible to put some sort of "on demand" switch to the modified controller for times when you need more amps (torque), and then you could switch it back to the factory settings when not in need of the torque or in situations when you would want more range or less draw on the batteries. Is this possible or is there a controller already out there with this concept? Thanks!