ok.... I installed a pyrometer and boost gauge along with a new lift pump (stock diaphram). I really do not no exactly what to expect from these gauges as to what is normal. The engine is bone stock with over 300k miles on her. At idle there is no boost pressure. At 65 mph (cruising), there is about 6 psi boost and 800* on the pyro (no trailer or load). If I shower down on her, the boost goes to about 20 psi and then as she speeds up, the boost returns back to about 7-8psi at 70 mph. Is this normal. I realize that I will see a lot different temps and pressures with a load, but I gotta start somewhere. I was just wondering if these numbers are normal.

 

Thats about what i was seeing with my truck when it was stock and ddint burn more oil then diesel