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Roush Performance Power Pac - Level 1 (18-19 GT)

Market Price $1,024.99 You Save 2% ($25.00)
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  • Item 406629

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    Features, Video & Details

    • Roush Performance Pac - Level 1
    • Increases of over 24 RWHP and 18 ft/lb RWTQ
    • Improves Throttle Response
    • Roush Cold Air Intake Kit
    • Reusable High Flow Dry Air Filter
    • 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
    • CARB EO Number: D-418-32
    • Cutting to the Engine Cover is Required
    • Fits 2018-2019 GT Mustangs

    Review & Installation Video

    Review & Install Video

    More Horsepower and Torque. The 2018-2019 GT Mustang arrives at your dealers showroom setup for the driving needs of the masses, not for you the individual driver. It is for this reason that Roush developed their Level 1 Performance Pac. By combining their Cold Air Intake and Flash Pack custom tune you will see an increase of over 25 Horsepower and 30 ft/lbs of Torque.

    Roush Calibration. 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 their Cold Air Intake installed. The improved throttle mapping of the included Roush tune will also give your Coyote powered Mustang a much more aggressive feel. Roush's calibrations have been optimized for 91 octane fuel, they are compatible with lower octane ratings with reduced power and performance output.

    Cold Air Intake. Roush's Cold Air Intake was engineered using CAD data to eliminate restrictions and to optimize air flow. Injection molded from premium automotive-grade materials, this Cold Air Intake will last a lifetime. The included high-flow dry air filter provides excellent filtration of harmful power robbing particulates. The filter is composed of two layers of wire mesh for durability and is proven to retain its shape even under high airflow. Washable, this dry air filter does not require oiling, saving you time and money.

    Straight Forward Installation. The Roush Performance Cold Air Intake Kit is designed to install easily with just basic hand tools. No extra modifications or special tools are required for proper installation. All necessary parts and instructions are included. Please note, if you would like to retain the factory engine cover on your vehicle, trimming to the cover is required.

    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 Level 1 Performance Pac is specifically designed for use on 2018-2019 GT Mustangs equipped with the 5.0L Coyote V8 engine.

    Fitment: 2018 2019 Details

    MPN# 422113

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Lower Air Box Tray
    • (1) Upper Air Box Cover Assembly
    • (1) MAF Tube
    • (1) MAF Insert
    • (1) Dirty Air Duct
    • (1) Tube Assembly
    • (1) Filter with Clamp
    • (1) Installation Insert
    • (2) MAF Tube to Air Box Bolts
    • (1) Boom Tube Delete Grommet
    • (6) Self Tapping Screws
    • (2) Roush Stickers
    • (1) Flash Pack Voucher
    Installation Info
    Will it fit my Mustang?

      Customer Photos (14) Submit Your Photo

      View All 14 Photos

        Questions & Answers (9)

        5 Top Rated Questions

        What is the difference between the cold air intakes part number 404871 and the intake that comes with the power pac Level 1 part number 406629. Are these cold air intakes the same other than the calibration that comes with part number 406629 ?

        • Both cold air intakes are identical, however the Power Pac 1 also includes a custom tune from Roush.

        Helpful (5)

        Will flashing your ECM void factory warranty's?

        • While the dealer may notice the Roush Performance Power Pac has been installed, you are protected by the Magnuson-Moss Warranty Act. Magnuson - Moss Warranty Act (15 U.S.C. 2302) states that legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can definitively prove that the aftermarket part caused or contributed to the failure in the vehicle.

        Helpful (4)

        For many of us that already purchased this intake prior to the power pac being released is there a way to get just the PCM for the tune with out the intake?

        • At this time we do not offer the Roush tune, or interface device separately. At this time we have no info on their availability separately via Roush. 

        Helpful (1)

        Is there a calibration from Roush for 93 octane for 48 state use?

        • The calibration will only be optimized for 91 octane fuel.

        Helpful (0)

        I already have the Roush x-pipe resonator delete and Roush axle-back exhaust installed on my 18 GT. Will these mods be taken into consideration when applying the calibration?

        • A resonator delete and axle-back will not affect the calibration.

        Helpful (0)
        Post Your Question
        4 More Questions
        Is a sound tube delete kit required for purchase with this power pack? 1 answer
        Does this remove factory rev limiter or allow for the mustang to go above its 160 mph top speed? 0 answer
        How is MPG affected by the Roush CAI and tune? 1 answer
        Hello, the description says that it would be better to combine this with a flash pack custom tune. What would be the proper tune to buy from your website? 1 answer

          Customer Reviews (5) Write a Review

          Overall Rating 5

          out of 5 stars

          Installation Time:Afternoon

          Installation Cost:$100-$250

          • Performance Gain 5 5
          • Fit 5 5

          • 5/5

            July 08, 2019

            Best bang for the buck!

            I was a bit nervous due to the sound tube being deleted. But the sound is still awesome and gain in acceleration is noticeable. I even picked up s slight burble that was never there before!


            Year: 2019 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            May 11, 2019

            Great Mod

            I am very impressed with the performance enhancement from this relatively inexpensive mod. Response is greatly enhanced, especially in Sport Mode. Highly recommended!


            Year: 2019 Submodel: GT

            Helpful (3)

          • 5/5

            April 21, 2019

            What a great tune.

            Easily flashes on to the pcm as a replacement of the factory tune. Replaces ford drivetrain warranty with Rpush warranty that ford covers so no difference to customer. Just an amazing and noticeable difference. Make sure the dealership installs. Great product!


            Year: 2018 Submodel: GT

            Helpful (4)

          • 5/5

            Installation Time: Less than 1 Hour

            December 17, 2018

            Great product!

            Installed today. Directions are pretty easy and straight forward if you know what you're doing. Everything fit perfect and It's a great addition to the car. I don't like that you have to remove the sound tube so you can't hear the the sound as good in the cabin now, but it sounds good from the outside.


            Year: 2018 Submodel: GT

            Helpful (5)

          • 5/5

            Installation Time: Less than 1 Hour

            October 30, 2018


            Installed easily and looks, sound, feel awesome!!! Fits in perfectly and makes your car look great!!!


            Year: 2018 Submodel: GT

            Helpful (8)