I changed the fuel filter already hoping it'd be simple. After that didn't work I took the solenoid off the fuel pump and tied the shut off valve open. That didn't work and we'll here I am, any suggestions?

 

What kind if shut down are we talking about?

Does it surge and sputter and die?
Does it just up and shut off as if you turned the key?

Does it immediately fire back up?
Does it need to cool down for a period of time? If so, how long?

Any fuel system upgrades? Electric fuel pump setup?

 

check at the injection pump and see if you got any fuel there while cranking

 

It's a slow shutdown after about 5 minutes of warming up it basically chokes to death.

 

fuel related some way

 

You're losing the fuel supply somewhere.