rev limiter

there is one very important thing i don't find it in the courses

its : speed limiter and Rev limiter

how its work , how to set it and how many kind of rev limiter .........

looking for any information about it

????

seems to me like wrong defined axis for this bit edit map,looking at the map it seems to close the throttle as much as the rpm increase.

to limit air flow on certain gear.

btw so much maps is defined wrong in that software you are using.

is there a speed based limiter map ? or just this map ?