This is the tuner's second upgrade for the truck, and having upped output from 411 to 525 hp for its Phase 1 program, it has returned with a new R2300 calibration supercharger kit to boost it to an impressive 590 hp and 590 lb-ft of torque.
The supercharger kit includes a new 75mm pulley and custom Roush PCM calibration, and was painstakingly researched and tested in extreme temperatures ranging from -20 to 120 degrees F, and at altitudes of up 14,000 feet above sea level. The kit is priced at $599 and includes a 3-year or 36,000-mile warranty on the Roush parts only.