I needed to change the stock steering servo to something that had much more power, torque and responsiveness. So I installed the BMS-661MG+HS Super Fast Servo (Metal Gear) 5.3kg / .10sec / 46.5g from Hobbyking. When I powered it up and tested it, the ESC kept stopping after a while because the servo was draining too much power from it. I then made a receiver bypass adapter;
BMS-661MG+HS Super Fast Servo (Metal Gear) 5.3kg / .10sec / 46.5g
HobbyKing HKU5 5V/5A UBEC