Two step on a blower motor??

I'm an old guy running a clutch and no electronics in a fast 16/top dragster type class and getting shellacked most of the time by converter drive cars with all the electronics including two steps. I always thought a two step that stutters the engine in a blown car was a definite no-no but apparently not?? If that is the case and I wanted to put one in for more consistent launches is it set by a micro switch under the clutch pedal or what? On a pro stock car does their 2 step arm from...

Two step on a blower motor??