Considering a elimination of your Cummins N14 engine's emissions system? A “delete,” typically referring to the removal of Diesel Particulate Filters (DPFs) and Selective Catalytic Reduction (SCR) systems , https://medium.com/@MatthewArnoldd/diesel-engine-performance-ecm-tuning-and-reliable-equipment-maintenance-9e5d06ef3076?sharedUserId=MatthewArnoldd