Supported Vehicles

The following vehicles are currently supported by projectLAMBDA Tuner:


  • Subaru Forester 1999 – 2002, EJ251/EJ253
  • Subaru Impreza 1999 – 2002, EJ223, EJ251/EJ253
  • Subaru Legacy 2000 – 2001, EJ251 (EJ252 5MT not supported)


  • Subaru Forester S 1999 – 2001, EJ205
  • Subaru Impreza WRX 1998 – 2000, EJ205
  • Subaru Impreza WRX STI 1998 – 2000, EJ207
  • Subaru Legacy B4 RSK/GT 1998 – 2001, EJ206
  • Subaru Legacy B4 RSK/GT 1998 – 2001, EJ208


  • Subaru Forester S 1999 – 2001, EJ205
  • Subaru Impreza GT 1998 – 2000, EJ205



If your car is not on the above list, your ECU may still be compatible with our Tuner. You can identify what type of ECU you have by the part numbers on the label and also by the connector configuration. Currently we are interested in adding support for the following ECU types:

This ECU is used in USDM, EDM and possibly some JDM NA applications. It has 3 connectors. They are manufactured by Automotive Electronic Control Systems Inc. and Unisia JECS Corporation.
NOTE: Some 1999 – 2001 ECUs will have the same connector but are manufactured by Denso. These ECUs are internally different and not supported yet.

This ECU is used in JDM turbo applications. It has 4 connector positions but only 3 are populated with pin contacts. They are manufactured by Unisia JECS Corporation.