Do I Need the Capacitors on back of Brushed Motor?

[MTBikerTim]

Water break in makes a huge difference. It's basically like what duster said. Depending on the size of the motor hook it up to 1 or 2 d cell batteries and run it in a glass of distilled water (not that it would make much difference). You will notice a huge difference compared to stock motor. I did it to a speed 300 motor in my mini t and couldn't believe the difference it made. It has to be done right from the start though. Look it up for a more detailed explanation and for how long you should do it for.