CM871 poor power and fuel econ

[Grounded Pilot]

Thanks! Yeah, I’m going to get the inline6 or nexiq adapter asap and get it copied. I’m really not confident in the ecm programming at this point. And I think the mechanic shop we work with does good work, but they don’t want to mess with the computers much other than diagnostics it seems. They copied the original ecm with the demandate program to the unit that’s in the truck now from what I understand, and what he remembers doing. From the paperwork, it just says “installed customer supplied ecm”. So not much help.

On that subject, which system is best to do Cummins/cat/Detroit all with one adapter?