What is the point of having the 'C' male to male fitting in the third diagram?
The way it is diagramed out there it looks like the fuel pressure regualtor is supposed to be T'ed into the air duct, intake manifold and EGR solenoid? I can't understand why this is. Why would you want the FPR connected to anything other than manifold vacuum?
It seems to me that you'd want the fuel pressure regulator connected directly to the intake manifold only. The line from the air duct then should go straight to the EGR solenoid. So instead of having the 'C' male to male connector you should leave the two systems seperate.
As soon as I get my NX up and running I'll try doing it my way and report back.