Isuzu MU-X (2022-2025) 4JJ3 3L Turbo Diesel 3' Stainless Steel DPF Delete PipeSKU: M3 179 Stainless Steel Performance DPF Delete Exhaust Upgrade for 2022 2025 Isuzu MU X 3L 4JJ3 Turbo Diesel Problems with the MU X 4JJ3 Diesel Particulate Filter are well documented. The MUX runs an active DPF system that traps harmful diesel particulates in a honey comb structure, and then burns them off as the DPF flow is reduced. In the MUX often the soot left behind after the burn cycle can build up and cause a permanent blockage and