100 shot of nitrous on 360 magnum engine

You’re kidding right? Most EGT thermocouples are too slow to be worth much.
Interesting comment. I have an EGT readout as part of a tuner on my diesel pickup, but I haven't paid attention to response speed. Next time I drive it, I will study.
I think that if I buy something as a tuning aid for my bracket car, an O2 sensor with some sort of recording capability would be more useful.