OK, I put in the Kokam 4S pack with the Feigao 8L and it was the same thing. It isn't the motor.

When I ran it this time, I ran it coming toward and then past me at full throttle. I could swear that I heard some sort of rev limiter kicking in keeping the revs down. I have it programmed in race mode and set for nimh cells so the controller should be running wide open.

I am really not understanding this.