2008 Rockwood

I have a 1988 f250 with a 5.8 that wont start. I have spark. I have 40lbs of fuel psi at the fuel rail. I've been cranking on the engine for a long time and the spark plugs are bone dry. It will run on either. The fuel pumps both run. Their is power to the injectors. The wires that come out of the brain box 58 and 59 that go to the ground side of the injector have continuity from the brain box to the injectors. Ground wire from the injector relay to the brain box is good the chassis ground from the brain box to chassis is good.
Any more ideas?