Low on power and no boost
I have a friend that has a 95 F-350 manual tranny and the truck will not build boost any longer. The odometer says 150,000 ish miles. I scanned with AE and contribution test passed, ICP shows 2,800+ psi at WOT but boost is only 3 psi max. New turbo, up-pipes. All done before checking with me.
Truck is completely stock except the exhaust has a cat on it and a glass pack looking muffler. Checked fuel pressure at idle and 60 psi at schrader valve. Had a fuel leak in valley and replaced with new fuel pump and rebuilt bowl along with new hoses and replaced manifold boots with RiffRaff ones and still have same issue.
Looking for any other ideas. Feels like it is just being held back, will not rev up at WOT like other trucks and I think maybe the Cat is plugged causing restriction? I have never run across something like this.
2001 F-250, 4X4, SWB, 7.3L, Crew Cab, MBRP 4" exhaust, Tymar intake, Swamps 175/146 single shot injectors, Driven Diesel Regulated Fuel Return, PHP Hydra Chip, Mechanical Waste Gate, Gutted EBPV, Deleted EBPV Pedestal, BTS tranny, 6.0L tranny cooler, RedHead steering box, Plenum inserts, RiffRaff upgraded clamps for intercooler boots, RiffRaff intake sleeves, CCV bypass from RiffRaff, boots from RiffRaff, Ride Rite Air Bags, Guzzle's Monster Relay mod, 1.0 A/R turbo Housing.
1996 F-250, 4x4, SWB, 7.3L, Supercab, Tymar, AFE Big Bore 4" exhaust with 3"-4" DP, Swamps 150/146 Injectors, PHP Hydra Chip with Swamps tunes, Terminator T500 HPOP, Beans D66 Turbo, HPX Crossover, EBPV gutted, EBPV Delete Pedestal, shimmed FPR, Carr Hoop Steps, Cab Lights, Limited Slip 4.10 rear end.
2002 F-250 4X4 Extended Cab Short Bed California truck, AFE 4" Exhaust, Tymar intake, Leveling Kit, Swamps 175/146 Single Shots, HydraChip with Swamps Tunes, Wicked Wheel, Mechanical Waste Gate, Gutted EBPV and deleted pedestal, RiffRaff intake sleeves, RiffRaff boots and clamps, BTS Transmission and 6.0L cooler.
2002 F-250 4X4 Extended Cab Short Bed, Swamps 175/146 single shot injectors, Hydra chip with Swamps tunes, RiffRaff FRx Fuel regulated system, 1.0 A/R Turbo Housing with high flow outlet, BTS Transmission with 6.0L cooler, 4" Exhaust, Tymar intake, RiffRaff boots and clamps, Wicked Wheel