Fuel Pressure Help!!!

Hey guys I have a 06 cummins that is having some serious issues!

I have a Fass 150 on it and an Edge.

My problem literally happened over night. One min she's running fine and the next morning it wouldn't move out of it's own way.

I replaced the Fass with a brand new one because it wasn't running quite right since I had bought it used.

I also put on a brand new CP3 with all new parts (FCA, Overflow, ETC)

I also just changed the factory fuel filter and it was pretty gummed up, the truck ran 100 times better for 15 mins but still didn't run the way it had before.

My symptoms are- The rail pressure is normal until the fuel pressure (gauge reads from the back of the CP3) starts to drop and then obviously the rail pressure goes with it until the truck finally dies if you stay on it. And it does drain the fuel pressure all the way to 0. If you're easy on it, the fass kinda keeps up and keeps the pressure at about 10-15 psi just cruising but as soon as you try to get on it even a little bit it just drains it.

It doesn't blow any funny colors of smoke, and it's not hard to start. Nor does the oil smell like fuel or has the oil level gone up...

I'm at a loss here and I desperately need my truck so I can leave out of state for training tomorrow.

Any and all help is appreciated.

Thanks, Ryan

Oh and while the truck was running I opened the water drain on the fuel filter and it was barely squirting out... This was with the fass not pumping since it likes to go on and off randomly.

And the in tank pump is disconnected, I have the Fass run to the tank with a draw straw and have completely bypassed the intank one...

Thanks again