M-1374-574357838414513D6-noegr-nofap.tun.mod Firmware
Catalog reference for M-1374-574357838414513D6-noegr-nofap.tun.mod and its EGR and FAP variant labels.
M-1374-574357838414513D6-noegr-nofap.tun.mod is a modified tuning-file entry labeled for changes to exhaust gas recirculation (EGR) and the diesel particulate filter, also known as FAP. The identifier does not reliably establish its exact Toyota or Lexus application or control module.
What the variant labels mean
The noegr label indicates a variant intended to disable or remove EGR operation. EGR normally routes a controlled portion of exhaust gas back into the engine to reduce nitrogen oxide emissions.
The nofap label indicates a variant intended to disable or remove particulate-filter-related functions. A diesel particulate filter traps soot, which the vehicle normally burns off through regeneration. The filename describes the intended variant, but it does not establish the precise software changes or how the vehicle will behave.
The .tun.mod ending identifies this as a modified tuning file rather than a clearly identified stock calibration. The complete code 574357838414513D6 and the M-1374 catalog marker distinguish the entry, but they do not by themselves confirm a vehicle model, controller family or compatible calibration.