Considering a elimination of your Cummins ISX engine's pollution control system? A “delete,” typically referring to the removal of particulate matter traps and Selective Catalytic Reduction (SCR) units, https://medium.com/@lakeshtarak377/diesel-truck-performance-guide-how-to-fix-dpf-egr-def-and-engine-problems-4c01f92dea11?sharedUserId=lakeshtarak377