With wheeling like that, I would recomend an accumulator tank. if the high pressure fuel pump grabs air, engine will stall. Ford had one built into the fuel lines on the early EFI stuff, later they figured how to do it all intank. The accumulator is a mini fuel tank. A low pressure pump moves fuel from the main tank to the accumulator. then an open line returns that fuel back to the main tank. If the low pressure pump grabs an air bubble, the accumulator sorts that out and sends the bubble back to the main tank. The bubble can be a huge gulp of air as well, same thing. bubbles rise, thus the return is always off the top of the accumulator. And the bottom of the accumulator feeds gas to the high pressure pump to the injectors. The accumulator is a mini gas tank that is always full so the high pressure pump won't catch air like a main tank can.
Now a street driven rig that always has a good amount of gas in the tank can get by without an accumulator. Carburators cheat as they use the fuel bowl as there accumulator.
The return line is low (almost no) pressure.
3 things really should match on EFI. Injector size, MAF and computer. The standard A9 series of computers has proven to work very well.
I do not recomend a truck computer.
Got some great reading material for you. Most everything you will need to know about swapping ford fuel injection can be found at
www.fordfuelinjection.com
That will answer so many questions and clear up a lot of things.
