EVC ELECTRONIC THROTTLE CONTROLLER FOR BMW X SERIES X3 M54B M57T N52B N57D N55B B57D 2.5L 3.0L I6Modern 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