The Link G4X WRXLink (04) WRX104X PlugIn fits the Subaru WRX & STI V10 04-06 with 2.5L engine featuring variable cam control and electronic throttle. There are two different Subaru Impreza WRX V10 ECUs available, please check the manual available for download on the features page to ensure you pick the correct version for your vehicle. The ECU PCB fits discretely inside the original factory enclosure. Installation of Link's Subaru WRX104X ECU is a breeze with no alteration of the factory wiring loom required. A built-in connector (or pins in some models) provides additional inputs and outputs such as oil pressure inputs or anti-lag / logging switches. Factory features are supported - see Features for any exceptions. Includes e-throttle and variable cam control. MAP Sensor not included.