Download Haltechs Quickstart Guide Here Suits: Plug 'n' Play replacement of the factory ECU for Subaru WRX MY06-10, STI MY06-07 2.5 Litre with DENSO ECU only. Includes: Injection molded plastic plug 'n' play adaptor harness M14 x 1.5 air temp sensor with matching plug and pins Auxiliary I/O 16 Pin Tyco plug and pins Notes: Not compatible with the Hitachi ECU. Product Overview If you are using a factory harness and are after an easy ECU upgrade, the Haltech Plug'n'Play Adaptor Kits are an ideal solution. These adaptors plug directly into your Haltech ECU and have factory connectors on the other side, which plug straight into the factory harness. Key Features: Fast and Cost-Effective Installation: Simply connect a handful of labeled wires and this plug-and-play product allows you to be up and running in just a few hours. User-Friendly Guide: The quick start guide will walk you through the installation of the Haltech Plug'n'Play adaptor into your vehicle. The guide is accompanied by the full ECU manual and software located on the CD or USB key provided with the ECU to refer to while completing your installation and configuration. Limitless Performance Tuning: When installed in conjunction with a Haltech Elite ECU, the harness opens the door to virtually limitless performance modification and tuning of your vehicle. The programmable systems allow you to extract all the performance from your engine by delivering precisely the required amount of fuel and ignition timing for maximum output under all operating conditions.