Unlock the massive potential of your 2020-2022 Duramax L5P with the Delete.Autos 4" Downpipe-Back Race Pipe. By completely bypassing the highly restrictive DPF and SCR systems, this massive 4-inch pipe guarantees maximum exhaust flow.
The Delete.Autos 4" Downpipe-Back Race Pipe is the definitive exhaust upgrade for the 2020-2022 GM 6.6L Duramax L5P. The massive factory DPF (Diesel Particulate Filter) and SCR (Selective Catalytic Reduction) systems severely choke exhaust flow, robbing your truck of power and drastically increasing exhaust gas temperatures. This 4-inch pipe removes those bottlenecks entirely.
Designed to fit 2020, 2021, and 2022 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD trucks equipped with the 6.6L Duramax L5P engine. Note: Custom tuning is strictly required to prevent check engine lights and limp mode after removing emissions equipment.