Toyota Firmware 89663-05550_dpf_off.bin
A catalog overview of Toyota calibration 89663-05550 and the DPF-off variant label.
89663-05550_dpf_off.bin is cataloged as a DPF-off variant of Toyota calibration 89663-05550. The label indicates a file associated with disabling diesel particulate filter functions. It does not, by itself, establish which specific functions were changed.
What the DPF-off label means
A diesel particulate filter traps soot in the exhaust. In a vehicle equipped with one, engine control software normally monitors conditions relevant to the filter and manages regeneration, a process that burns off accumulated soot. DPF-off files are generally described as modifications to that control strategy, but the filename alone does not reveal the changes in this particular file.
The related catalog entry 89663-05550 identifies the calibration without the DPF-off variant label. The available identifiers do not establish an exact vehicle application or confirm the contents of either file.