Join Date: Jun 2013
Location: Rhode Island
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Sounds like a fuel issue.
Back of the Injection pump theres 2 air lines. One goes across the engine, over the exhaust and down to the waste gate. The other goes across to the intake plenum. This is the AFC reference for the Injection pump, it tells the Injection pump how much boost is being made, and adds fuel accordingly. If this is broken not only will it be a boost leak, but the IP will never get the signal to add more fuel.
Also make sure the air filter clean is up to spec (big enough for the engine), fuel filter, and prescreen is clean as well.
Make sure the throttle linkage is allowing full throttle as well.
If all those checks out look into the low pressure fuel system and add a gauge.
Daily driver/ workhorse: 1994 2500SLT 4x4 Auto. Hewitt EGT, Boost, Trans gauges, Under hood Mech FP gauge, Trident fuel lines, Tork Tek OFV, Mag-Hytec DD Transmission Pan, Ford manual hub conversion, Diamond eye 4" turbo back, 37337 Upgrade. 260K
98 2500slt 4x4 ECLB moldy G56, south bend clutch 3rd gen trac bar , boxed control arms, billet tappet cover w/ dual breathers trident fuel lines, Tork Tek OFV, 4' stainless side dump with muffler 240k