Toyota LC150 4.0 1GR-FE 89663-60E66_ST1_E2_SAP OFF SV 4000 p.

89663-60E66_ST1_E2_SAP OFF SV 4000 p. identifies a modified engine-control calibration for a Toyota Land Cruiser Prado LC150 with the 4.0-liter 1GR-FE gasoline engine. The 89663-60E66 identifier belongs to Toyota’s engine-control software numbering family. The catalog also lists 89663-60E66 without the modification labels.

Engine control and the modified variant

The engine control module manages functions such as fuel injection, ignition timing and emissions-related operation using engine and sensor data. Its calibration contains the settings that determine how those controls respond during driving. The shared identifier links this modified entry to the 89663-60E66 calibration family, but it does not establish the exact hardware compatibility or every change made in the file.

ST1 commonly denotes a Stage 1 performance tune. It signals a modified calibration intended to alter engine response or output, although the label alone does not specify the changes or their measured results.

SAP OFF refers to the secondary air injection system being disabled in the modified variant. That system supplies fresh air to the exhaust during cold starts to help reduce emissions while the catalytic converters warm up. The label indicates a calibration change associated with that system, not a feature of the unlabeled 89663-60E66 entry.

E2 is a variant label often used for an emissions-related modification, but its exact meaning cannot be confirmed from this identifier alone. SV 4000 p. appears to name another setting associated with 4,000 rpm. The identifier does not establish which control or limit it changes.