fuel pressure for nitrous...

I have 3 kits on my 7 second car. A 350 shot and two other 300's. Each regulator has and quick connector on it. And I use the big speedtech gauge to check fuel pressure with a orfice equaling the diameter of each fuel jet added up. I run 8 spread. And my fuel pressure does best at about 5.25 psi on each stage. If you font have race pack. Check your plugs often. Nitrous is safe, if your very careful and stick to the rules.