A fogger system, like mine, injects the nitrous and the extra fuel, through the same nozzel in the runner. Each nozzle has two jets, one for fuel, one for nitrous. In my case 12 jets. In most aplications, 75-100hp is perfectly safe, for a stock engine. Just make sure you don't run lean or have too much ign advance. I am running 150hp shot on a 170 inch motor. As far as what the engine see's, that is like runnint a 300hp shot on a 350 inch motor.
