Going to add nitrous and I need to know where to tap the fuel line adapater for the wet system into the fuel line coming from the fuel pump. Do I add it to the inline or the return line? Just wondering it there would be to pressure on the inline to cut the line and add c clamps.

Why would you add in on the return line? That's the RETURN LINE, not FEED LINE.

Just make you clamp in down good if you use clamps. If you're already running very high fuel pressure (ie. rising rate FPR), then use fittings.

just run it into the test port on the side of the rail.

He's boosted, so I'm sure that port has already been used.

Eh, T it off or something. Not hard.

I'm kind of a retard when it comes to nitrous... for the fuel jets, do you need to have a specific constant pressure? For example, if you spray when the fuel pressure is, say, 50 psi at 5 psi of boost, will the mixture be off when you go to say, 60 psi of fuel at 15 psi of boost? Or does it not matter because the pressure difference is always X with a 1:1 regulator?

either use the test port...or most kits include a T fitting so you can just cut the fuel line going to the rail. my T had all the necessary AN fittings as well to use the braided hose.

Originally posted by ner947
Eh, T it off or something. Not hard. I'm kind of a retard when it comes to nitrous... for the fuel jets, do you need to have a specific constant pressure? For example, if you spray when the fuel pressure is, say, 50 psi at 5 psi of boost, will the mixture be off when you go to say, 60 psi of fuel at 15 psi of boost? Or does it not matter because the pressure difference is always X with a 1:1 regulator?

It does not matter, because with a 1:1 fpr, you always have 43.5 psi differential fuel pressure... or whatever you have it set to ;)

Didnt you sell your car? anyways use the testport if you are 97-99 if not I'm pretty sure the 95-96 guysuse the return line.

I can't believe i'm reading any of this.

You CANNOT use the return line for a nitrous fuel supply. it's low pressure. They calibrate the jets based on a rough standard fuel pressure just like they use for determining injector flow. You ALWAYS tap for fuel somewhere on the high pressure feed side.

For the record, mitifto doesn't even have a 2GNT anymore, but for the rest of you:

All wet kits have to get fuel from the feed side. You can use the rail service port, or in the event that it is plugged, T off your line somewhere after the rail and before the regulator. 95 guys can use the service port because its not doing anything anyway - we've already got a return.

Get it? Jeez.

*edit - spelling*

Even if it "was" boosted....why would that take up the test port on the fuel rail? i cant think of anything in a turbo kit that utilizes it. Its by far the easiest way to do it.


1997 Silver RS
Built
T3/T4 BB Turbo
20psi
Most current 1/8th mile time: 8.1@93mph 2.015 60'
1996 Black Supra TT
2004 Silver Snake

Originally posted by Nitrous_RS1997
Even if it "was" boosted....why would that take up the test port on the fuel rail? i cant think of anything in a turbo kit that utilizes it. Its by far the easiest way to do it.

A lot of HRC guys use that as a return outlet.