3406E warms up looses boost ?

[Heavyhauler]

That simply makes sense, low EGT means not enough fuel. I had the mufflers off for other work and (thought) hollowing them out might have helped the truck breathe better. The boost is usually around 20/28 pounds. When the truck throws its fit randomly she will struggle to build boost loaded or empty. Which I assume in full circle ... no fuel no spool. I always noticed that the fuel tanks would be so hot you couldn't touch them. once that happens she will be stuck in her funk. Then if I park it for a few hours and things cool off it'll run good for a bit till everything warms up. Buy new stacks to lift the EGTs to start ?