Considering a bypass of your Cummins ISX engine's pollution control system? A “delete,” commonly referring to the deletion of Diesel Particulate Filters (DPFs) and Selective Catalytic Reduction (SCR) systems https://medium.com/@bhawanisingh03322/diesel-engine-troubleshooting-guide-dpf-egr-def-common-engine-problems-c8a53172c313?sharedUserId=bhawanisingh03322