Originally Posted by nikos2002

Rick, here is the set up listed in the set up guide from the Viper forum:
Throttle punch settings for 4wd Short Course Applications
When using the VTX10R speed control with sensored 550 motors, we recommend a setting of 30% on your throttle punch settings in 4wd SC applications.

We recommend these VTX10R settings when running 4wd SC with the VST XL 4.5 or 5.5 motors.

VTX10R-Profile #2
Brake strength: 80%
Brake PWM freq: 8000Hz
Brake curve: linear
Neutral Drag brake: 0-10%
Throttle PWM freq: 9600Hz
Throttle punch: 20%-30%
Throttle curve: Linear
Deadband: Middle
No timing: default
No motor protection
ESC protection: 240 degrees
Note* ESC Protection takes a heat reading from inside the speed control where a normal heat gun can’t take an accurate core reading.
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You guys are all on the mark - the VTX1 has a booster for 1s use and can be used in 2s down to 6.5 motors.