Vehicle looses power when attempting to accelerate, intermittently in most gears

Way too many possibilities to list. Failure of the one nylon fuel line where it collapses from pulling fuel to the pressure pump is pretty common when warm as well as poor connections at the two main wiring harness connectors at the top of the left hand valve cover. We unplug those connectors, check pin fit, clean them and use Stabilant 22 on them all the time. Has anyone driven this with a TechII scan tool and monitored exhaust backpressure, turbo boost, MAF, and the general system operation? Are there any codes setting such as EGR low flow, and/or low boost?

There is a problem with the Fuel Filter Housing. With losing power, and longer cranking for engine starts. Have changed many for leaking, (not visible leak).