Allen Nelson - last resort to contact you.

[Red03SilSS]

Well never got a call like you said..... They told me tonight they are going to some guy local which I tried to talk them out of but I guess it's out of my hands now. So please just send me an unlocked PCM.

[farmtruc]

Yeah. It needs a wideband, but its not my truck and not my decision, i told them to get one but ya know how that goes. The motor will go in next week thats why I am in such a rush to atleast talk to Allen and figure out what the issues could be.

I just saw this post.

the issues could be that the engine is running lean, but the pcm is tuned for what the spec's are. I can't tune for unknown variables.
before any issues are resolved, start with fuel pressure, make sure it's there, then see what the wb is reading.
if i'm commanding a 12.5 and increased all the tables i'm supposed and the truck is still running lean, it might be a weak fuel system.

that is still odd, only two plugs are showing a lean condition, and the fact that they are two cylinders that don't usually show on the lean side.