Question: what turbo are you running now? The wrong answers include the T25, the 14b, and the small 16g. Correct answers include 50 trim variants, perhaps as small as the Evo 16g, etc, if you're trying to get everything you can out of it on pump and don't mind monitoring another consumable that will result in a dead engine if you let it run out without your knowledge- unless you set up a failsafe to cut boost when the tank is empty, or something similar.

My game plan has always been keeping the boost lower on pump and running a moderate shot of nitrous. There's also nothing stopping you from running the nitrous when you're at the track running a quality race fuel and 30 psi .