Yes these trucks are difficult to find with this exact engine, trans & chassis configuration.

I believe the LD version is best for data logging. I know nothing about tuning as this is more of a...

A few more datalogs for comparison. Seems good ?

11816
11817
11818
11819
11820
11821
11822

I believe there is a error in the xdf file I was using to view the log data.

If I use the 1228747 LD file instead of the HD version, I get better results. And I see a MAP reading that actually...

Hello ,
1990 c2500 Hd above 8500lb gvwr
stock engine , stock everything.
350 tbi with th400 trans.
1228747 ecm
Poor off idle acceleration and power loss. Runs great at highway and once it's...