89663-60Q10-TUN 98_E2_SAPoff.bin: Toyota Engine Calibration

89663-60Q10-TUN 98_E2_SAPoff.bin is a modified engine calibration file labeled for secondary air injection disablement. Its base identifier, 89663-60Q10, belongs to Toyota’s engine-control calibration number family. The full filename adds tuning and variant labels that distinguish it from the base catalog entry.

What the SAP-off label means

SAPoff indicates a modification associated with the secondary air pump system. On engines equipped with secondary air injection, the system introduces fresh air into the exhaust during cold operation to help reduce emissions as the catalytic converter warms. A SAP-off calibration is intended to disable that system’s operation or associated monitoring. The filename alone does not establish exactly which controls or diagnostic checks were changed.

TUN identifies the file as a tuned variant, while 98_E2 is an additional variant label. Its precise meaning is not established by the catalog name. The related 89663-60Q10 entry identifies the base calibration, but does not describe the changes in this modified file.

Engine-control context

The engine control module uses calibration data to manage engine operation and emissions functions. A secondary air system fault can trigger a warning light or affect operation, depending on the vehicle and fault. The SAP-off label describes the intended modification, not a documented repair or an approved emissions configuration.

The exact vehicle application and the file’s complete set of changes cannot be determined from the identifier alone.