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Roush Flash Pack (15-17 Mustang GT)

Item 394062
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Roush Flash Pack Voucher
      • Increases of over 15 RWHP and 19 ft/lb RWTQ
      • Improves Throttle Response
      • Calibration Optimized for 91 Octane Fuel
      • Flashed via a J2534 Interface Tool - A Dealer Service Charge May Apply
      • Optional 3 Year/36,000 Mile Limited Powertrain Warranty Available
      • Fits 2015-2017 Manual and Automatic GT Mustangs


      More Horsepower and Torque. Ford calibrates their Mustangs for the masses not the individual driver. That is why a Roush Flash Pack custom tune is so important to the performance enthusiast. Roush engineers developed their dedicated premium fuel calibrations under laboratory conditions to increase the horsepower and torque of your GT across the entire RPM range. With improved throttle mapping this tune will also give your Coyote powered Mustang a much more aggressive feel. After installing a Roush Flash Pack calibration on your 5.0 GT you will see an increase of over 15 Horsepower and 19 ft/lbs of Torque at 4300 RPM.

      J2534 Interface Tool Required. Just about any dealer can perform this calibration upgrade in under an hour without even breaking a sweat. The Roush Flash Pack Calibration is flashed on to your Mustang's ECU using Roush's RDT software and an industry standard J2534 interface tool. Please note that a dealer service charge may apply.

      Optional Warranty. An optional 3 Year/36,000 Mile Limited Powertrain Warranty is available through Roush. The optional warranty must be purchased within 30 days of the service installation date. Click here to see more details.

      Application. This Roush Flash Pack is specifically designed for use on manual and automatic 2015-2017 GT Mustangs equipped with the 5.0L Coyote V8 engine. This calibration has been optimized for 91 octane fuel, is compatible with lower octane ratings with reduced power and performance.

      Technical Note. This product is not legal for use in California or any other state adopting California emission standards. Not legal for use on pollution controlled motor vehicles; intended for off road use only.



      Roush 421995

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Flash Pack Voucher

      Customer Reviews (1)

        Brand Image

        Reviews of Roush Tuner products have an average rating of 3.0 out of 5

          Questions & Answers

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          Will It Fit My Mustang

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