Is it possible to run both the fuel line for the nitrous and a fuel pressure gauge off of the schraeder valve? Does anyone make some sort of a "T" fitting?

 

Good question. I would also like to know.

 

ttt

 

?

 

You can do it several different ways.

I am using a fuel pressure gauge sender, a fuel pressure safety switch, a schrader valved fuel pressure relief/test port, and nitrous supply all off the fuel rail port. Here is a pic:
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It is difficult to see all of the components I used in this picture, but here is the list starting at the fuel rail port going towards the fuel solenoid.

after removing the valve core form the rail port, I screwed on an NX adapter manifold (D4) with #-04 AN female inlet on one end, #-4 AN male outlet on the opposite end, and a female 1/8" NPT port in the middle. I screwed the fuel pressure gauge sender into the NPT port. On top of the manifold I screwed an Aeroquip #-04 AN 90° hose end and a short section of #-04 hose with a straight #-04 end on the other end. This screwed into the male end of a second NX manifold. This manifold also originally had only one 1/8" NPT port in the middle but you can buy them with multiple NPT ports. I drilled and tapped a second port sized 1/16" NPT in the side of this manifold. I screwed the NX fuel pressure safety switch into the 1/8" NPT port and I screwed in a Ford fuel pressure test port with schrader valve and cap into the 1/16" NPT port so I could have a place to attach a hand held gauge, and/or release fuel pressure without having to take something apart. The Female end of the manifold screws onto the #-04 to 1/8" NPT adapter that screws into the fuel solenoid.

 

here is one solution, although it will not fit on the fuel test port, it will fit beween the fuel selenoid and the line coming from the test port. the ones in the picture have only one port and in one picture it has a Hobb's pressure safety switch. the holes are 1/8" npt and it is -4 male one end and -4 female on the other (-6 available). you can get a multiport -4 manifold (similar to single port pictured) at http://www.outlawperformance.com/d4manwitmulp.html

 

Thats what the NX manifolds that I used look like.
The -04 size fits right on the factory fuel rail port.

 

these are the NX ones. But, on some vehicle the clearance next to the fuel rail is too tight (like late speed density cars with a MAP sensor) to mount the pieces it can also require the provided fuel line be mounted in an undesirsable way (straight up) above the TPI itself.

 

Yeh, if you had the MAP senser in the stock location on the side of the plenum the manifold may not fit on the rail without relocating the sensor. When mounted on the fuel rail, the top of the manifold is just below the bottom of the plenum. You could use a straight hose end on it but it wouldn't look the best. As you can see in my pic I used a 90° hose end there. I think it all made for a very clean looking install considering all that is hooked up to it.

 

Thanks guys