My new GT has a mild dose of throttle lag. I googled "Mustang Throttle Lag" and found this: You can re calibrate the computer of your car as following. Turn on, but not start your car. Wait a minute for the dash warning lights go off. Press the gas pedal slowly until it hits the floor and then release it slowly. Turn off and then start your car. The problem will go away. Has anyone heard of this & does it work?