Toyota 89663-04161-TUN_E2.bin Calibration File

89663-04161-TUN_E2.bin is a Toyota engine-control calibration file. 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 full filename combines the calibration identifier 89663-04161 with the suffix TUN_E2. That suffix distinguishes this file from the related catalog entry, but it does not establish which settings have been changed or what E2 means. The filename alone does not identify a specific vehicle application or confirm whether the file is stock or modified.