you should have a small vaccuum hose that connects from your intake manifold to the top of your fuel pressure regulator. That is the hose that you need to interface. Just imagine that you are going to hook the NMU in series with the intake manifold and the fuel pressure regulator. That covers the vaccuum hose connections.
The nitrous connections are made with the steel braided hoses. You should have a "nitrous in" and a "nozzle" port. The "nitrous in" port runs back to your bottle. The "nozzle" port goes to your intake pipe.
You should not get any air blowing out unless there is nitrous in the tank. The only thing that should be sucking air in is the hose that comes from the intake manifold.
I may be misunderstanding your problem though... You might try calling ZEX if you get really stuck. I had pretty good experience with their thech line.
The nitrous connections are made with the steel braided hoses. You should have a "nitrous in" and a "nozzle" port. The "nitrous in" port runs back to your bottle. The "nozzle" port goes to your intake pipe.
You should not get any air blowing out unless there is nitrous in the tank. The only thing that should be sucking air in is the hose that comes from the intake manifold.
I may be misunderstanding your problem though... You might try calling ZEX if you get really stuck. I had pretty good experience with their thech line.