sounds about right...has a little pump simular to that on an airhorn...push the shift up botton air pressure moves the actuator moving your shifter shaft at the same time kills the ignition for a split second...no need to let of the throttle..
and yes you can do the same thing with your foot..powershifting...
SMOKEY BURNOUT MASTER OF THE WORLD!!!!!
08 883/HAMMER 1250..s/e heavy breather,rinehart 2-1, Power Vision,RK shocks,1in tank lift,wire tuck,crossroads fork brace,low rise drag bars and a few top secret parts..