Toyota FJ Cruiser 4.0 1GR-FE 89663-35550_ST1_E2 SV Firmware
A catalog overview of Toyota FJ Cruiser 1GR-FE engine firmware 89663-35550_ST1_E2 SV and its variant labels.
89663-35550_ST1_E2 SV is cataloged as a Toyota FJ Cruiser firmware variant for the 4.0-liter 1GR-FE V6. The 89663 part-number family is associated with Toyota engine control software, making the engine control module the likely application.
The engine control module manages functions such as fuel injection and ignition timing using engine operating conditions. Those controls affect how the engine runs, but the identifier alone does not establish the specific changes made in this file.
Reading the variant label
The suffix ST1_E2 SV identifies a variant of the related 89663-35550 catalog entry. ST1 commonly denotes a modified Stage 1 calibration, while E2 may refer to an emissions-related variant. The exact changes represented by E2 and SV are not established by the catalog name, so neither label confirms a particular modification or driving result.
The listed price of 4000 does not identify a currency or provide technical information about the calibration.