Toyota Prado 150 89661-60E50 / 89663-60Z31 Stage 1 DPF Off Firmware
A guide to the Toyota Prado 150 2.8 1GD-FTV Stage 1 DPF Off calibration and its engine-control identifiers.
The Toyota Prado 150 2.8 1GD-FTV firmware entry is a modified diesel engine-control calibration labeled Stage 1 DPF Off. It is associated with the engine control module, which manages combustion and emissions functions for the 2.8-liter 1GD-FTV engine.
What the identifiers describe
The complete catalog name is Toyota Prado 150 2,8_1GDFTV_89661-60E50_89663-60Z31_STAGE1_DPF OFF_CRC OK. The 89661-60E50 identifier belongs to Toyota’s engine control module part-number family, while 89663-60Z31 identifies the associated engine calibration software. The related catalog entries list these two identifiers separately.
The engine controller uses sensor inputs and calibration data to manage functions including fuel injection, boost control and exhaust emissions. Those functions affect how the engine delivers power, responds to the accelerator and operates its emissions equipment. The catalog name identifies the modified file, but it does not document the individual calibration changes.
Stage 1 and DPF Off labels
Stage 1 commonly describes a software performance tune intended to alter engine output without naming major hardware changes. The filename does not state a power or torque figure, so a specific gain cannot be inferred from the label.
DPF Off indicates a modification intended to disable diesel particulate filter management. In normal operation, the DPF traps soot and the engine controller manages regeneration to burn accumulated soot under suitable conditions. A DPF Off file changes the way the controller handles that system. The label alone does not establish which strategies were changed or whether any physical exhaust components were altered.
CRC OK is a catalog label indicating that the file’s checksum or integrity check is considered correct. It does not independently establish vehicle compatibility, emissions compliance or the quality of the calibration.
For diagnosis, the distinction between the module part number and calibration identifier matters: both help describe the engine-control application, while the Stage 1 and DPF Off labels describe this named modified variant. Disabling emissions controls can make a vehicle illegal for road use in many jurisdictions.