EVC ELECTRONIC THROTTLE CONTROLLER FOR BMW X SERIES X5 M62T M62B N62B S63B N63B 4.4L 4.6L 4.8L V8Modern 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