I had a trash amps 5000 3s that would puff on every run, and after a few hours it would almost be back to normal. I used it this way for a month (roughly 100 cycles, I drive a lot so what ) and it finally died a week ago. After that I got 2 True RC 2s 8000's and they have WAY more punch and almost the same top speed! (around 50mph)