I've been running a '92 5.9 in my '94 Ford F350 conversion for about 5 years now. The engine is completely stock except for a 3/4 turn on the fuel screw and a 16cm turbine housing. I can max about 15psi towing a 10Klb load. I'm reading that it should be around 20psi stock, more with the fuel screw and turbine changes.
I used a military 90* exhaust manifold to get the turbo away from some plastic a/c parts under the hood. It bolts right up, but it's significantly larger than the stock manifold. Could this be the reason my boost is low?
I'm just wondering before I dismantle stuff and start looking for boost leaks. Thanks!