Finally got the high flow injectors (ADSKBAL137P26HFEX) and turbo (SCH174828) in. The truck runs a bunch better!! Before, my empty mpg was 7.4 to 7.5. Now my mpg is 7.2, but that is 50% empty and 50% loaded at 62K. The most boost I saw was 27psi, but 22 psi seemed the norm. Empty I was pulling 9 psi to maintain 60 mph. EGTs ran about 800, but did spike at 1000 on a 4 mile grade. These are after the turbo readings.
I still have 2 problems with it. Before it reaches operating temp, it still sputters and stamers. Once the temp gauge hits 180 it goes away. I thought this was injectors, but after the new injectors the problem remains.
The other problem is that in a long pull while loaded, I hear pops and sputterings from the exhaust. I also watch the boost go from 25 to 18, to 23 to 20 and bounce around synchronized with the pops and sputtering. I have done nothing to the fuel pump. I even hesitate writing this because the truck is due for a fuel filter change and it might just be filters. If it is not filters - Am I over fueling it?? Under fueling it?? I have driven electronic engines 98% of my life - what does a fuel pressure gauge tell me and do I need one??
Because I am kinda ignorant on mechanical engines - yesterday I was tooling around at 62K on the flats at low rpm (1000-1300). Does this over heat the pistons?? Cause pistons to crack?? Anything bad? I was pulling 15 psi boost and 800* exhaust temp. My load point and dump point were about 4 miles apart , I wasn't on the throttle very hard as most of it was on a dirt road and there was no traffic that I was holding up. I don't think I made it into top gear all day.