Question: 7.3 powerstroke how much boost?
Answer: Generally, you will see more boost in higher gears and heavier loads. Basically, the harder your engine works, the more boost you should see. I was under the impression from reading various diesel boards that stock OBS 7.3l should make about, 12-14 psi max and that SD 7.3l should see about 14-18 psi max stock.