CALL 877-2-LETHAL (877-253-8425) or EMAIL // M-F, 9am-6pm
0 Items Cart
My Cart

You have no items in your shopping cart.

Facebook Twitter Rss Pinit Youtube Instagram TeamLethal

Roush 2015+ Mustang 2.3L EcoBoost I4 Flash Pack

SKU: RSH-421989

Manufacturer: Roush

Be the first to review this product

Availability: In stock

$389.99
Free Shipping on this item!

Roush 2015+ Mustang 2.3L EcoBoost I4 Flash Pack

*image is only a representation and may not be accurate

Do you have a 2015+ Mustang with the I4 2.3L EcoBoost engine and want some more power without spending a fortune? You’re in luck!

The Roush Performance Flash Pack for the 2015+ 2.3L I4 EcoBoost Mustangs adds an exceptional 42 RWHP and 35 lb-ft. of torque to the stock 2.3L Ecoboost engine. As if that wasn’t enough, an optional 3-year/36,000-mile ROUSH Limited Powertrain Warranty gives you confidence to crank up the power!

Roush calibration engineers have extensive OEM calibration experience and sweat the details to ensure strong performance without sacrificing drivability. Hundreds of hours spent in the lab and on the dyno, testing and validating rigorously, set our ROUSH calibrations apart from “guesswork” tuning found in other kits.

In addition to improved horsepower and torque, our kit also provides improved boost and throttle mapping that will lend a “sportier” feel right off idle to provide amazing drivability improvements all through the power band.

Do you have the ROUSH 2015+ I4 2.3L Mustang Cold Air Intake installed, but want even more power? Adding this Flash Pack to your existing setup will get you the equivalent of our “Level 1” Power Pack System (51 RWHP/45 RWTQ)!

Do you have the ROUSH 2015+ I4 2.3L Mustang Cold Air Intake & ROUSH 2015+ I4 2.3L Mustang Axle-Back Exhaust installed, and want the most power possible out of your stock 2.3L I4? Adding this Flash Pack to your existing setup will get you the equivalent of our “Level 2” Power Pack System (60 RWHP/51 RWTQ)!

The ROUSH calibration in our Power Packs is easily programmed into the ECU of the vehicle via an industry standard J2534 tool & our free Roush Diagnostic Tool (RDT) software (note: dealer service charges may apply). Most dealers, should they be equipped with the proper tool, can complete the calibration process in under an hour. Our extensive list of ROUSH Performance authorized dealers can be found at the top of our web page.

Note: Not approved for sale or installation in California or states that require an EO number

  • Fits 2015+ Ford Mustang I4 2.3L EcoBoost
  • ROUSH “Flashpack” Performance Tune
  • Increased engine performance of 42 RWHP and 35 ft-lb RWTQ over stock!
  • Increased torque and horsepower across the entire RPM range
  • Improved throttle mapping lends a more “sporty” feel to the I4 2.3L EcoBoost engine
  • Calibration optimized for 91 octane fuel (to obtain advertised power gains) and designed by ROUSH engineers under laboratory conditions
  • Can be added to a 2015+ 2.3L I4 Mustang with the ROUSH Cold Air Intake already equipped to get Level 1 equivalent power increases (51 RWHP/45 RWTQ) or a vehicle with the ROUSH Cold Air Intake & ROUSH Axle-Back Exhaust already equipped to get the Level 2 equivalent power increases (60 RWHP/ 51 RWTQ)
  • Vehicle’s PCM to be flashed using ROUSH’s free RDT Software & industry standard J2534 interface tool (Note: Dealer service charges may apply)
  • Package will include a “Flash Voucher Card” containing the voucher code & voucher family necessary to recalibrate vehicle with the RDT Software
  • Optional ROUSH 3-year/36,000-mile limited powertrain warranty available for purchase
  • Note: Not approved for sale or installation in California or states that require an EO number
  • Manufacturer Roush
    Free Shipping Yes

    Write Your Own Review

    Only registered users can write reviews. Please, log in or register

    • Mustang 2.3L Ecoboost 2015,2016