A few people have asked how to remove the throttle limit on the 5.0L supercharged vehicles. A good way to start with these kind of problems is to compare the FPV or Sprint calibrations to a stock calibration. Eg a FPV 351 auto calibration is HAFJ1K2 and a standard 5.0L auto calibration is HAFH5HB Here you can see the following tables have been tuned by Ford. Desired throttle angle (auF0077) increased from 419 to 579 Throttle Angle auF0083 has been increased from 60 to 80