Ok, Take off the gear on the motor, and the idler gear. Put the idler gear, ON BACKWARD on the motor. Put a piece of paper inside the gear so it will grab the motor shaft. The gear SHOULD touch the one attatched to the axle, and it should go faster. Only one thing changes, instead of pressing the forward button to go forward, you have to press the backward button. Trust me on this one, it makes your car MUCH faster.
Pros-car goes faster
-faster top-end speed
Cons-slower accelleration
-takes too long to slow down
-have to recharge more often
You HAVE to try this, it is easy to do, and makes your car faster, FOR FREE! Oh yea, and without wrecking anything