Toyota Firmware 89663-06794: Stock and AVT Stage 1 Files

89663-06794 is a Toyota calibration identifier in the 89663 engine-control software family. This family is associated with the engine control module, which manages engine operation using sensor inputs and programmed control strategies. The exact vehicle application and changes represented by this calibration are not established by the catalog filenames.

What the catalog variants indicate

89663-06794.bin is the file without a modification label. The catalog also lists 89663-06794-_AVT_Stage1.bin and 89663-06794-_AVT_Stage1_E2.bin as separately named variants. The Stage 1 label indicates a modified tuning variant, while E2 distinguishes the latter file from the other Stage 1 file.

The filenames do not identify the tuning changes or explain what E2 means. They also do not establish that the unlabeled file is an original factory read. The shared identifier groups the files under the same calibration record, but it does not by itself establish compatibility with a particular vehicle or controller.