2015-17 Mustang Roush Flash Pack - 5.0L by Roush

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  • Roush Mustang Flash Pack - 5.0L (15-16)
Roush Mustang Flash Pack - 5.0L (15-16)

Add up to 15HP & 19lb-ft or torque to your 2015-2017 Ford Mustang 5.0L with this Roush Performance flash pack from Late Model Restoration!

Item #RSH-421995
MPN# 421995

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  • Improved Throttle Mapping
  • Gain up to 15 RWHP & 19 lb-ft RWTQ


  • Optimized for 91 Octane Fuel
  • 3-year/36,000-mile Warranty
  • ROUSH Exclusive Coyote Calibration

What's in the Box

  • (1) Flash Pack Voucher

Made in the USA

Product Description

Roush 5.0L Flash Pack
One of the quickest ways to add more HP & TQ to your 2015-17 Ford Mustang is with a proper tune. The Roush performance flash pack for the Coyote 5.0L can add an exceptional 15RWHP and 19lb-ft. in torque! Roush also offers a 3-year/36,000 mile limited powertrain warranty that will give you the confidence to crank up the power in your S550!

This 15-17 S550 Mustang Roush Flash pack will not only increase horsepower and torque, but it will also add premium fuel calibration and the throttle mapping will add a sporty feel off idle to provide performance and drive ability gains through out the entire power band!

Experienced DIY’ers and nearly any dealer can perform the calibration upgrade in under an hour without getting their hands dirty!

-Optional warranty must be purchased within 30 days of service installation date.

-Horsepower and torque improvements shown are typical. Individual results may vary.


-Fits 2015-2017 Mustang 5.0L

ROUSH® Limited Warranty - Click Here

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Vehicle Applications

Ford Mustang - 2015 (15) - 2016 (16) - 2017 (17)

About This Brand

Roush - The Art of Performance Engineering
ROUSH Performance is the first specialty-vehicle company to combine race-proven technologies with advanced automotive engineering. The result, a unique mix of street car and race car...Is a ROUSH car. Or more specifically, a ROUSH Mustang or F-150 pickup with styling, performance, and handling characteristics derived from the racetrack and modified for street legal usage. The vehicles and components produced by ROUSH Performance are imprinted with Jack Roush's vision, passion for performance, and commitment to excellence. He personally approves the design, engineering, fit, finish and overall performance of each package, ensuring that his personal standards are met prior to production and product release. Many of these products are designed by the same engineering group that has helped Roush Racing become the winningest Ford racing team in history.

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