This F-150 Supercharger Kit by ROUSH delivers 570 HP and 530 LB/FT of torque to the 2011-2014 Ford F-150 5.0L-4v V8 powertrain. The ROUSH Phase 2 Calibrated Supercharger Kit is part of the TVS line of superchargers developed by ROUSH that have raised the bar for performance and reliability. The ROUSH R2300 supercharger features Eaton's new TVS rotating assembly that delivers more power in a smaller package for uncompromising performance. The ROUSH R2300 TVS supercharger is a roots-type, positive displacement supercharger that features twin four-lobe rotors that are twisted 160-degrees. This causes greatly enhance thermal efficiency, higher volumetric capacity, higher operating speeds, creates a smoother, more efficient flow of air into the engine and has improved noise and vibration characteristics. ROUSH Phase 2 Supercharger Kit delivers 570 HP and 530 LB/FT of torque to the 2011-2014 Ford F-150 5.0L-4v V8 powertrain, a 210hp and 150lb-ft gain over stock. This part now utilizes the ROUSH Flash Voucher card to be calibrated using ROUSH Diagnostic Tool (RDT) software and pass-thru device. If you do not have access to an approved pass-thru device, you can send your PCM back to ROUSH to be flashed for an additional $100.00 fee. 2011-2014 Ford F-150