turbo_outlaw

How do you connect a fuel pressure regulator to a returnless style fuel rail? Use the Schrader valve?

03sierraslt

iTrader: (22)

What are you trying to do? They already have a regulator in the tank. An EFI fitting will attach to the rail like stock, but don't run two regulators.

turbo_outlaw

I was going to try a walbro 400lph on my factory returnless system but I've been told it will overpower the factory regulator. Next step is to convert to return style and add a external FPR. But I'm not very positive to where the regulator connects to after my returnless rail. I'm not trying to swap out my rails.

03sierraslt

iTrader: (22)

If you are gonna go return and use the factory rails then you will have to dead head them.
From tank to regulator, regulator to rails using a standard EFI fitting, and return ran normal.

Use a regulator with two inlets and one return

turbo_outlaw

Makes sense, but I didn't think doing it that way was much good. I'll have to research a little more

03sierraslt

iTrader: (22)

Mount the regulator as close to the rails as possible. If you wanna do it right then ditch the factory rails and run the regulator after the rails.