I can only find a command to toggle FullImpulse:
/GenSendMessage Throttle_FullImpulse_Button FullThrottle
I also found that all of the Throttle commands that adjust the throttle position do not turn FullImpulse on or off. I tried the following commands:
I am looking for a command that will take me out of FullImpulse whether I am in it or not.