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

Everyday Low Price: $389.99

In Stock 

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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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Product Reviews (2)

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2 of 2 REVIEWS
2 of 2 REVIEWS

4 Stars   It's in !!!
By on 7/28/2016
So I received my ROUSH flash pack and recently got it installed at my local ford ROUSH dealer .. On my 2015 GT ... I already had a ROUSH cold air intake and ford racing X pipe on the gt .. Do I feel 29 more hp and 36 lb-ft at 4300 rpm .. Oh yea ?? Vroooom .. It's faster .. But most of all .. It's a good peace of mind knowing it's all ford and ROUSH mods ... I'm keeping this baby under my extended warranty for as long as possible.. 7 years or 72000 miles and with only 5000 on the clock now I should have no problem.. As the ford tech advised me .. Total cost for card and install .. Under $550 .. I feel it was worth it .. It only took an hour to install. Don't believe any dealer that says it takes longer ..

Yes, I would recommend this item to a friend!

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5 Stars   GOT IT !!!!
By on 7/23/2016
Just got my roush flashpack voucher 7/23/16 getting it programmed on 7/27/16 ill be the first to let you know how good it works with my 2015 GT ,,, also installed the roush cold air intake ... ford racing X pipe .. and ford racing oil separator ,, oh and also got the roush white shift knob ... :) thats enough for this year ...

Yes, I would recommend this item to a friend!

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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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