Roush Performance 2015-17 Mustang 5.0L V8 Performance Pac Level 2 w/OBD 422071

The ROUSH Level 2 Performance Pac for the 2015-2017 Mustang GT adds an exceptional 29 RWHP and 36 lb-ft. of torque to your GT. The included ROUSH cold air kit is fully tested and to work seemlessly with our performance ECU re flash and adds a sporty sound to the 5.0L engine. Our cold air kits are the best in the industry, designed and tooled in CAD to maximize available underhood space, and injection molded from premium automotive-grade materials for long life. The ROUSH premium 2.5" axle back exhaust system is built from high quality 304 grade stainless steel for long life and great sound. The system includes all hardware, and is fully tested to work as a system with the ROUSH cold air kit and ECU flash. Roush calibration engineers have extensive OEM calibration experience and sweat the details to ensure strong performance without sacrificing driveability. Hundreds of hours are spent in the lab and on the dyno, testing and validating our calibrations.