ProCal 4 Calibration Tool

The Ford Performance M-9603-M8B Calibration Kit is engineered to significantly enhance the performance of 2018-2021 Mustang GT models. This comprehensive kit includes an 87mm Bullitt throttle body for improved airflow, a Ford Performance cold air intake system to supply cooler, denser air to the engine, and the ProCal 4 calibration tool for easy installation and tuning. This calibration kit delivers noticeable improvements in horsepower and torque, with reported gains of +19 HP at 6,500 RPM and substantial torque increases, including 42 lb-ft at 2,000 RPM and 18 lb-ft at 4,500 RPM. It also provides sharper throttle response, making the vehicle feel more immediate and engaging. Key requirements and considerations for this kit include the mandatory use of premium fuel, with a minimum octane rating of 91. Additionally, this kit supports gear ratio changes up to 4.90:1. Ford Racing Parts calibrations are built with exclusive Ford proprietary software and engineering, ensuring optimized performance while remaining emissions legal. This kit is protected by a 3-year warranty, offering peace of mind with your performance upgrade.