Toyota Firmware 89663-0C710-B_MOD_E2_sap_off.bin

89663-0C710-B_MOD_E2_sap_off.bin is a modified Toyota engine-control firmware file whose name identifies a secondary air pump off variant. The related calibration identifier is 89663-0C710.

What the variant label indicates

The sap_off label points to a modification involving the secondary air injection system. In normal operation, this emissions system pumps fresh air into the exhaust after a cold start to help the catalytic converter reach operating temperature and reduce emissions. The filename indicates an off variant, but it does not establish whether the file disables pump operation, diagnostic monitoring, or both.

The MOD label identifies the file as modified. The meanings of B and E2 are not established by the available catalog entry. The related 89663-0C710 identifier does not, by itself, identify a stock file or a specific vehicle application.