BlackMagicC5

I dont know anything about tuning, nkt looking for technical info, just some basic answers. For example, say you have a C5 with a built stroker. You add nitrous with a good nitrous controller. Do you have to get tuned for the exact 2 stage your running? Or can you play with the nitrous shot based on track/street, ect?

For twin turbo cars, say you have boost per gear, or 2 boost levels, do you have to preset the boost levels and tune for that, or can you make adjustments to the boost levels based on your current tire, tractions, street, strip, ect without having to retune? Thanks for the advice.