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I'm mocking up fuel lines for my pro flo xt install. Very green to this but from what I've read, I think the attached illustration seems the way to route?
Really grateful for learned input on this; would you do it differently?
some notes:
will be using braided lines (not hard lines)
those are 90 degree fittings I'm proposing into the rear of the fuel rails and for the fuel delivery line to run in between the intake base and plenum
the fuel pressure regulator is presented a bit off to the left for ease of illustration; will be trying for a symmetrical install so would sit around the front of the intake underneath the throttle body
I think I should submit this illustration to the curators at the louvre
it's simpler to run the feed line into the back of one of the fuel rails, run a braided crossover at the front of that fuel rail to the front of the fuel rail on the opposite side and then put the fuel pressure regulator at the back of that rail with the return line leaving from it. I use this regulator as it is very versatile and a quality piece: https://www.summitracing.com/parts/a...gaApBVEALw_wcB
Only thing that had me thinking twice about that is would fuel delivery the last few injectors (those at the end of the rear of the second fuel rail that routes to the return line) risk having lower pressure/ volume than those at the front of the first rail (where the delivery line is plumbed in)?
I notice on the TPI setup the delivery line plumbs in at the front and there is also a cross over.
cheers for the regulator recommendation; usefully they distribute that locally so no punitive personal import charges
Last edited by GTA1990; 01-06-2019 at 01:03 PM.
Reason: incoherence
I've understood that as long as the fuel rails and fuel rail crossover are a larger volume than the fuel line and you aren't pushing some high horsepower you're just fine. For instance, I use a -6 AN feed line with -8 AN fuel rails and crossover. They way to really tell if you're starving the injectors would be an O2 sensor in both exhaust outlets or a fuel pressure gauge that was bouncing very erratically which could signal the pump or system being inadequate.
01-06-2019, 10:48 AM
