2017-2025 GM 6.6L Duramax L5P EGR Delete kit with 4" DPF & Cat Delete Pipe and 3.5" Downpipe and 2020+ CAN Bus Plugs20172023 GM 6. 6L Duramax L5P EGR Delete Kit with 4" DPF & CAT Delete Pipe, 3. 5" Downpipe, and 2020+ CAN Bus Plugs Take your Duramax to the next level with this all in one EGR Delete Kit designed for 20172023 GM 6. 6L Duramax L5P engines. This complete package includes a 4" DPF and CAT Delete Pipe, a 3. 5" Downpipe, and CAN Bus Plugs for 2020+ modelscombining to improve exhaust flow, reduce backpressure, eliminate EGR restrictions, and maintain