Nitrous and speed limiter

[Mievaan]

I run speed controlled 2-stage nitrous setup.
In some shorter tracks we have max speed we may run.
If I put speed limiter in M800, does it shut off nitrous before it begins cut ignition same way as RPM limiter?

[Mievaan]

After testing I notice it wont shut off nitrous.
So only way I figure it out to work was making nitrous setup 3 stage sequential with speed control and making last stage coming in few kmh before limiter begins to cut, without n20 solenoid and zero timing retard.