1)Do your burnout normally.
2) Turn the switch on to arm the system. This adds power to the system and accessories like a window switch or progressive.
3) Purge the system if you have it.
4) Light the bulbs.
5) Now all you do is drive the car normally. We will set the nitrous up with WOT activation and a window switch. Possibly even have a progressive.
As an example of a car with WOT and window switch
Lights the second bulb. Launch the car. Car is WOT and hits 3000 rpm. Nitrous starts spraying. You left off to shift nitrous turns off. You shift. You are WOT now in second at 4000+ rpms. Nitrous starts spraying. Same at the 2-3 and 3-4 shift.
You let out at the top of the track, nitrous turns off. Purge if you have it. Turn off system. Close the bottle once you park.
Caution. Can cause huge reduction in ET.
This right here.
As far as the legality of it. In Texas at least. The only law regarding nitrous is that it is a controlled substance. You have to be over 18 to possess it but nothing regarding automotive use.