Toyota 89663-60Q10-TUN_E2_SAPoff.bin Firmware
A catalog overview of Toyota ECU calibration 89663-60Q10 and the TUN_E2_SAPoff firmware variant.
89663-60Q10-TUN_E2_SAPoff.bin is a modified Toyota engine-control firmware file labeled for secondary air injection pump, or SAP, off. Secondary air injection supplies fresh air to the exhaust during cold starts to help reduce emissions while the catalytic converters warm up.
The related catalog identifier 89663-60Q10 belongs to a Toyota engine-control calibration part-number family. The engine control module uses calibration data to manage engine operation and emissions-related functions. The catalog does not establish the exact vehicle application or controller hardware for this particular calibration.
What the variant name indicates
In 89663-60Q10-TUN_E2_SAPoff.bin, TUN identifies a tuned variant and SAPoff indicates that the secondary air injection pump function has been switched off in that variant. The E2 label is also part of the filename, but its precise meaning is not established by the catalog name. The filename does not show which diagnostic checks or other calibration settings were changed.
With secondary air injection disabled, the system no longer performs its named cold-start emissions function as intended. That distinction matters when diagnosing cold-start emissions or secondary air injection faults. The base identifier 89663-60Q10 alone does not carry the tuned or SAP-off labels.