Sequoia 5.7 3URFBE 89663-0CK66_ST1_E2_EVAP_SAP OFF RC SV2 6000 p. Firmware
Explore the Toyota Sequoia 5.7-liter engine calibration 89663-0CK66 and its labeled emissions-system and performance modifications.
Sequoia 5.7 3URFBE 89663-0CK66_ST1_E2_EVAP_SAP OFF RC SV2 6000 p. is listed as a modified engine-control calibration for the Toyota Sequoia 5.7-liter 3UR-FBE V8. Its filename identifies an EVAP and secondary air injection delete, alongside labels for a Stage 1 tune, rear catalyst and a 6,000-rpm setting. The exact calibration changes cannot be established from the filename alone.
Engine control and the 89663-0CK66 calibration
The 89663 part-number family identifies Toyota engine-control software. The engine control module uses its calibration to manage functions such as fuel delivery, ignition timing and emissions-system monitoring. In a flex-fuel 3UR-FBE application, engine management also supports operation with appropriate gasoline and ethanol blends.
The related catalog identifier 89663-0CK66 provides the base calibration reference. The longer filename adds modification labels. It does not establish the vehicle years or all part numbers with which the file is compatible.
What the modified labels indicate
EVAP SAP OFF indicates modifications associated with the evaporative emissions and secondary air injection systems. The EVAP system manages fuel vapors from the tank, while secondary air injection supplies air to the exhaust during cold operation to help reduce emissions. An “OFF” label can refer to changes in control or diagnostic monitoring. The filename does not show exactly which functions or fault checks have been changed.
ST1 conventionally identifies a Stage 1 performance variant. E2, RC and SV2 appear to be additional tuning or variant labels, but their precise meaning is not established by this catalog entry. In particular, RC may refer to a rear catalyst-related change, but that interpretation is tentative. The 6000 p. label likely denotes a 6,000-rpm setting, although the filename does not establish whether it changes the rev limiter or another engine-speed parameter.
These labels describe the modified file, not the stock behavior of every 89663-0CK66 calibration. Changes to emissions controls or their diagnostics can affect fault reporting, readiness status and road-use compliance.