I know that's why I started karting..
I can't think of a thing that I haven't done to this damn car... I figured I'd better get a different hobby before I had neon lights underneath it LOL...
Of course I've tested every aspect of the nitrous. I had the carbs off with the plates on and put shirt sleeves underneath them so I could give everything a blast to make sure everything was going to work and it did..
Also checking I had the right fuel pressure while in operation not before it's flowing. Which is what the op needs to make sure of.. and if he calls Mike thermos at nitrous supply like I suggested I'm sure that will be backed up by him as well... With that said, hitting the nitrous this next summer will give me something to look forward to....