Toyota and Lexus SW#89663-60M50- MOD_E2_sapoff.bin
A catalog guide to Toyota and Lexus calibration 89663-60M50 and the modified SAP-off filename label.
SW#89663-60M50- MOD_E2_sapoff.bin is a modified Toyota or Lexus engine-control calibration labeled for secondary air injection, or SAP, deactivation. The label identifies the intended modification, though the exact changes in the file are not documented by its name.
Secondary air injection supplies fresh air to the exhaust during certain cold-start conditions. This helps the catalytic converter warm up and reduces emissions while the engine and exhaust are cold. A SAP-off variant is intended to disable that function or its associated control behavior.
Calibration and variant labels
The related catalog entry 89663-60M50 identifies the calibration without the modification suffix. In SW#89663-60M50- MOD_E2_sapoff.bin, MOD marks a modified variant and sapoff names its intended secondary-air change. The meaning of E2 is not established by the catalog name.
The 89663 part-number family is associated with Toyota and Lexus engine-control software. That family association does not establish the exact vehicle, engine, emissions specification, or other changes in this particular file.