0411 ecu

[little bear]

i bought this ecu tuned from some one else but its not working with my motor i plug in a different ecu from my buddys truck and it works fine can some please help me see whats wrong with this tune to get it working in my custom hot rod all stock dbc 5.3 motor and 4l60e trans little bear tunes.hpt

[1970ss8.1]

1972 c 10 stock 02 tahoe ecm scan.hpt
Here is a 5.3 4l60 tune I ran on my C10. Do a compare.