670 hp

  • Free ROUSH Diagnostic Tool and Free 670 HP Upgrade!

    ROUSH Performance has supercharger news! This week, we released a big announcement involving our 2015+ supercharger, and also wanted to remind you about the ROUSH Diagnostic Tool. Firstly, ROUSH is excited to announce a free upgrade for our 2015+ ROUSH supercharger. Effective immediately, ROUSH is handing out vouchers for 43 horsepower on the house, taking your 627-horsepower supercharger kit up to 670 horsepower with a new calibration featuring improved drivability, durability, and of course more horsepower to bring you the highest... continue reading

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