Toyota Firmware 89663-35131: Calibration Catalog
A catalog overview of Toyota calibration 89663-35131 and its stock, modified and tuned filename variants.
89663-35131 is a Toyota engine control calibration identifier. The 89663 part-number family is associated with engine control module software, which helps manage engine operation through functions such as fuel delivery and ignition timing. The exact vehicle application and the behavior changed by this calibration are not established by the catalog names.
Catalog variants
The file 89663-35131 (2).bin carries the calibration identifier without an explicit modification label. That alone does not establish that its contents are stock. The files SW#89663-35131- MOD_e2.bin and 89663-35131- MOD_e2.bin are labeled as modified, while 89663-35131_TUN.bin is labeled as tuned.
The names 89663-35131_TUN_E2.bin and 89663-35131_TUN_E2.rar combine tuned and E2 labels. The catalog does not define what E2 means or identify a specific engine-control feature changed in those files. The .rar extension denotes an archive rather than a calibration binary.
These labels distinguish catalog entries, but they do not by themselves establish the changes within a file or compatibility with a particular vehicle or controller.