Performance Power Paks combine the greatest gains in horsepower and torque for your S-197 Mustang with an easy installation, plus an increase in your fuel efficiency! It all begins with a high-velocity cold air intake featuring a stainless steel air box with a built-in velocity stack and lifetime filter that can be cleaned and re-oiled. They also have a high-flow inlet elbow that's as smooth as glass and made from heat-resistant plastic for increased velocity and cooler air. These Power Paks will streamline the airflow in your S-197 Mustang to the point that you need a computer re-flash. To finish the packages, includes the perfect tool for the job--the SCT Xcalibrator 4. Preprogrammed and offering a much larger backlight display, the Xcalibrator 4 also functions as a custom tuner and features an analog input port to support your O2, EGT, or bar map sensors. --gain maximum performance and the biggest bang for your buck.