EVC THROTTLE CONTROLLER TO SUIT SUBARU IMPREZA G3 GE GH EJ15 EJ16 EJ20E EJ201 EJ204 1.5 1.6L 2.0L F4Modern vehicles rely on 'fly by wire' throttle technology to measure pedal pressure & position to send signals to the engine's computer and convert it to acceleration. Many of these systems have a noticeable delay. EVC throttle controllers by iDrive (rebranded as Ultimate9) reduce this lag and improve response to make the acceleration feel more responsive. Key Features: Eliminates throttle lag. Increases throttle response. Improves overall