Ultimate 9 Throttle Controller for 2015+ Ford MustangThe Ultimate 9 Throttle Controller is a throttle response controller that gives you the power to tune your vehicles throttle response for any driving style or situation. The Ultimate 9 does this by providing new points of reference for your vehicles throttle mapping, allowing you to either sharpen or dampen your vehicles throttle response. The Ultimate 9 features four driving modes to ensure you have the perfect throttle response at any given moment,