Nitrous install help

[ZXTOO]

My friend has a SHO and he is installing nitrous on it but I'm afraid he's doing it wrong. He's using a dry NOS mustang kit. How do you set up the vacuum for the FPR? Do you need an adustable FPR or is the stock one fine? Does he need a fuel pressure safety switch?
I think the way he has it set up is 2 solenoids, one for the nitrous but the other solenoid has a vacuum on it, running to the FPR. I've always used wet kits so I don't know how to hook up a dry kit so I'm just trying to figure out the right way to hook this up so I don't have to help him pull the motor.....again

 

[olympic]

It sounds like he's doing it right. Dry kits boost the fuel pressure in the rails to supply the additional fuel while spraying. So that second solenoid is regulating the vacuum to the FPR to spike the fuel pressure.

The stock fuel pressure regulator is fine and a fuel safety switch is a good idea for safety but it's not required for the system to work properly.

Many people here use the NOS or Zex Mustang dry kit. As long as he followed the instructions and uses the correct jets for the SHO he should be OK.