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Roush Performance Pac w/ Dongle - Level 2 (15-17 GT)

Market Price $1,412.99 You Save 12% ($163.00)
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$1,249.99 (kit)

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  • Item 400277

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    Features, Video & Details

    • Maximize Horsepower and Torque
    • Improve Throttle Mapping and Boost
    • Sportier Feel and an Aggressive Sound
    • Intake Features High Flow, Reusable Air Filter
    • Premium Automotive Grade Materials
    • Precision Design
    • Simple Installation Includes At-Home Tuning
    • 3-Year/36,000 Mile Limited Powertrain Warranty
    • Fits all 2015-2017 Ford GT Mustangs Models

    Review & Installation Video

    Review & Install Video

    Boost Your Mustang’s Performance. With the Roush Performance Pac with Dongle (Level 2), your GT Mustang will receive a boost in horsepower, torque, throttle mapping, and boost. The Pac includes the Roush Performance Cold Air Intake, the Roush Axle-Back Round Tip Exhaust System, and a Roush-designed re-calibration for your car’s PCM. Everything you’ll need to take command of the high-performance Mustang scene is included in the Performance Pac.

    Quality You Can Trust. Like all Roush parts, the Performance Pac has excellent quality that makes it a smart investment for any muscle car owner. Materials like 304 stainless steel guarantee durability, while CAD-designed structures ensure a perfect fit.

    Roush Re-Calibration. With the Performance Pac, Roush has included a dongle to “flash” your PCM right from the comfort of your own garage. The free RDT software requires only a standard J2534 tool to easily reprogram the specific calibration into the ECU. Finishing the job of installing the Power Pac won’t require you to make a trip to the dealership and hand over your keys, and you’ll take less time to get back out on the road.

    Three-Year Warranty. Roush backs their Performance Pack with a three-year/36,000-mile limited warranty. Please see manufacturer warranty for details and exclusions.

    Application. The Roush Performance Pac with Dongle (Level 2) is designed to fit all 2015-2017 Ford GT Mustangs.

    Fitment: 2015 2016 2017 Details

    MPN# 422071

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Cold Air Intake
    • (1) Exhaust System
    • (1) Dongle
    • Installation Hardware
    Installation Info
    Tech Specs
    Will it fit my Mustang?

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    Questions & Answers (3)

    3 Top Rated Questions

    Can the dongle and tune be purchased by its self since other items were purchased separately?

    • Unfortunately, we do not carry the dongle and tune separately from this kit by Roush. We would recommend reaching to Roush Performance to see if you are able to get the dongle and tune separately.

    Helpful (0)

    Is this system legal for California A Mustang GT?

    • Due to the Roush Performance Pac's cold air intake not having a CARB EO# it would not be recommended for purchase in the state of California.

    Helpful (0)

    Can this be installed straight to a stock config? Is the dongle the standard J2534 tool that's mentioned? Thanks.

    • The Roush Performance Pac 2 can be installed on a stock mustang! The J2534 Tool mentioned is referring to the included dongle.

    Helpful (0)
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    Customer Reviews (1) Write a Review

    Overall Rating 5

    out of 5 stars

    Installation Time:Afternoon

    • Performance Gain 5 5
    • Fit 5 5

    • 5/5

      Installation Time: Afternoon

      January 17, 2018

      Worth it.

      The Roush Axle-Back exhaust is very easy to install as long as you have the right tools (a reciprocating saw will make it easier) and it fit perfectly. After you cut the stock mufflers you can compare the difference in weight between the Roush axle back and the stock exhaust. It is big. I love the sound, cold starts are surprisingly quiet. But when you hit the throttle it is another story. Installing the exhaust took me less than 45 minutes with all the patience in the world. The Roush Cold Air Intake was almost easy to install, if it werent for the sound tube bolt in the fire wall. Again, the right tools will make it easier, but not that easy (it is tricky to get to that bolt, everybody think the same when it comes to that part). After you remove the sound tube it is very easy to install and it fit perfectly too. Some people who has bought the Roush CAI has posted on the reviews that on days with heavy rain they get water through the heat extractor in the hood and into the Air filter. I haven't had that problem yet and I have been under heavy rain a few times since I installed it. The PCM flash provided by Roush is for the 85mm opening (that is with the venturi tube inserted), if you want to remove the venturi tube and run with an 105mm opening you will need a custom tune. It took me a while to install the CAI because of the firewall bolt, other than that it was pretty fast. I would say it can be installed in one hour and a half. You can feel the improvement in responsiveness and acceleration after installing this package. I have not notice a difference in mpg.


      Year: 2017 Submodel: GT

      Helpful (13)

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