EVC THROTTLE CONTROLLER FOR ISUZU 4JA1-L 4JJ1-TC 4JJ1-TCX RZ4E-TC 4JK1-TC 4JK1-TCX 1.9 2.5 3.0 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