EVC THROTTLE CONTROLLER FOR HOLDEN F18D4 Z20S1 Z20D1 A14NET A16LET TURBO DIESEL 1.4L 1.6L 1.8L 2L I4Modern 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