On trucks that use big injectors, stock style pumps do not keep up, regardless of the port size in the head. For example, a single walbro do as good as dual stock pumps. But dropping to 15 psi of fuel pressure at WOT is not what I'd call adequate. Changing nothing, but going from a Walbro to an A1000 and the fuel pressure stays at 60-70 psi, whichever I set it to. Yes, both had the same 5/8" feed and 1/2" outlet with dual 3/8" lines split from it.
my in tank aeromotive died
personally I think it doesnt like diesel but aeromotive doesnt seem to agree. I run one on my crownvic on gasoline
redoing fuel with an a1000
aeromotive keeps saying a deadhead system is what they want me to run, a 4 port feed?
pondering it.
I have assembled a similar style filter pump setup as what you have in this thread. -10jic couplers on fb1311 bases
currently I have DI fittings in the back of the heads so the only restriction is the 1/8 npt at the front of the heads to the regulator.
is the reg the greatest restriction or the two 1/8npt?
I can do the return in 3/8 or 1/2 hardline but i think I need to pull the reg apart to see if there is any reason to go huge on the return
a bender for 5/8 hardline is $$, still havent aquired one, the 1/2 was $170