ROUSH Performance's Phase 2 Supercharger system boosts performance to 727 horsepower for the 2015 - 2017 Ford Mustang 5.0L V8, the ROUSH 2.3L Phase 2 Calibrated Supercharger System is part of the TVS line of superchargers developed by ROUSH.Our Phase 2 system builds on the outstanding performance of our 2015 - 2017 Phase 1 supercharger system, by adding proven core components and careful calibration for an additional 57 horsepower and 65 lb - ft of torque.The ROUSH R2300 TVS supercharger is a roots - type positive displacement supercharger that features twin four - lobe rotors twisted 160 - degrees vs older three lobe, 60 degree twist technology. The fourth lobe and the added twist, when combined with newly - redesigned air inlet and outlet ports, offers greatly enhanced thermal effciency, higher volumetric capacity, higher operating speeds, a smoother, more effcient flow of air into the engine, and improved noise and vibration characteristics.