Used, good OEM engine control module (ECM) computer pulled from my 03 Ram 2500 (5.9 CR HO Cummins, 6-speed manual, federal emissions). Part no 3963994.

I bought a replacement ECM ($800) that did not solve the problem I was having, and then couldn't return it.

Asking $500 obo or trade for:

Smarty or other unlocked tuner (Edge, H&S, Bully Dog, Superchips, Banks, Diablosport, etc) that works on an 03-04 Cummins

FASS or AirDog fuel pump / filtration setup for 03-04 Cummins