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Roush Active Exhaust Upgrade Kit (15-17 GT, EcoBoost)

Market Price $1,699.99 You Save 1% ($15.00)
Our Price

$1,684.99 (kit)

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  • Item 389793
  • MPN# 421926

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Features & Details

  • ROUSH Active Exhaust Upgrade Kit
  • Converts Roush Passive Exhaust to Active Exhaust
  • Select Between Touring, Sport, Track and Custom Exhaust Notes
  • Custom Programming with Included WiFi OBD2 Interface and Roush iOS App
  • Compatible with Roush part numbers 421920, 421921421922 and 421923.
  • Fits 2015-2017 GT and EcoBoost Mustangs equipped with a Roush Passive Quad Tip Axle-Back
Roush Active Exhaust Upgrade Kit. You already know that the Roush Quad Tip Passive Axle-Back Exhaust will add an aggressive, raspy growl to the sound of your Mustang's exhaust. But, do you sometimes feel that you are missing out because you didn't opt for the Roush Active Exhaust instead? Well don't worry because now you can convert your Passive Exhaust to an Active Exhaust with a Roush Active Exhaust Upgrade Kit.

Total Control. Take total control of the volume and performance of your GT or EcoBoost Mustang with a Roush Active Exhaust Upgrade Kit. Roush's proprietary Active Exhaust system ties directly into your Mustang's powertrain control module, opening and closing the mufflers valving based on throttle position.

Four Distinct Exhaust Sounds. The ROUSH Active Exhaust System includes a center console mounted selector knob that allows you to easily switch between four different sound modes on the fly. Choose from Touring, Sport, Track, and Custom.
  • Touring. The Touring mode closes the mufflers valves completely keeping the exhaust volume to an absolute minimum.
  • Sport. The Sport mode keeps the exhaust quiet during normal driving conditions. Accelerator position and vehicle speed are used to determine valve position, opening up under acceleration for a more aggressive sounding ride.
  • Track. The Track mode is wide-open. This mode keeps the exhaust tailpipe valves fully open at all times and doesn't restrict the raw sound of your Mustang. This mode is intended for track use and is not legal for street use.
  • Custom. The Custom mode lets you create a custom sound map with the included WiFi OBD2 interface and ROUSH iOS application to personalize the exhaust sound to your own tastes. With the app you gain full control over the position of the valves based on vehicle speed, rpm and accelerator position. Download the free ROUSH Active Exhaust App for iOS - Here


Application. This Roush Active Exhaust Upgrade Kit is designed for use on 2015-2017 GT and EcoBoost Mustangs equipped with a Roush Quad Tip Axle-Back Passive Exhaust System - part numbers 421920, 421921, 421922 and 421923.

Download the Roush active exhaust app instructions - Here

Fitment: 2015 2016 2017 Details

What's in the Box
  • (1) Flashed Controller, Active Exhaust
  • (1) Vehicle Ready Wiring Harness
  • (1) OBDII Active Exhaust Programmer
  • (1) Hardware Kit – Active Exhaust
  • (1) Switch, Mode Selector
  • (1) Switch Plate, Metal with Engraving
  • (1) Switch Bracket
  • (2) Bolt – M4 x 0.7 x 10
  • (2) Push Nut – 3/16” 
  • (3) Washer – M4 Nylon 
  • (7) Zip Tie with Edge Clip
  • (1) Knob, Knurled Style
  • (1) Set Screw – M3 x 0.5 x 6 
  • (1) J-Clip – M6  
  • (1) Bolt – M6 x 31 HEX
  • (2) Foam Tape 30 mm x 35 mm x 7.9 mm
  • (1) Micro Fuse – 10 AMP   
  • (20) Zip Tie – 7”  
  • (1) Multipurpose O-Ring, 5.6 mm
Installation Info
Tech Specs
Will it fit my Mustang?
  • GT - 15, 16, 17
  • EcoBoost - 15, 16, 17

Most Helpful Reviews

5/5
Active Exhaust

Having catless ARH with a ford racing x-pipe and a roush quad exhaust is an extremely loud set up, so I wanted something to tone it down when I needed or wanted to. The sound when its touring mode ...

Read More
Helpful (1)

5/5
Excellent product

Pretty easy install process although I did have a local audio installer finish the job from the dash to completion. The active exhaust works well and is very useful for when I want to turn the volume down ...

Read More
Helpful (1)

Overall Rating 3.7 out of 5 stars
Read All 3 Reviews

Customer Photos

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1 Questions / 1 Answers

Ask a Question

Does the active exhaust kilt only work with the Roush Quad Tip Axle-Back. Or can you put it on a different exhaust.

PaulP

  • This kit is designed to work with Mustangs that have the Roush Passive Quad Top Axle-Back installed. It may not work with other exhaust systems.

    AshleyK

Helpful (0)

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Customer Reviews (3) Write a Review

Overall Rating 3.7

out of 5 stars

  • Loudness / Volume 5 5
  • Exhaust Note 5 5
  • Fit & Finish 5 5
  • Bang For Your Buck 5 5



  • 1/5

    February 18, 2017

    Roush Active

    Returned Item. I liked the way my RS3 sounded, with all 4 exhaust tips active (uncapped). I actually added an X-Pipe, which deleted the "bread box" resonator, instead. Please note: Roush needs to make it clear that this Kit is for toning down the sound. Windows up, there's no problem listening to music or conversation. Save the $1600 , and enjoy the sound of your ROUSH Quad Tip Exhaust, as Jack Roush wanted it to sound (NOT muffled to please your H.O.A.)

    BITTEN2

    Year: 2016 Submodel: GT

    Helpful (1)

  • 5/5

    August 16, 2016

    Active Exhaust

    Having catless ARH with a ford racing x-pipe and a roush quad exhaust is an extremely loud set up, so I wanted something to tone it down when I needed or wanted to. The sound when its touring mode which is valves closed is just disappointing. I thought having a full system would make it sound little louder than stock but it sounds like a stock GT exhaust with something holding it back. I can explain it best buy saying its a raspy version of the stock GT exhaust that comes on the car from factory. The sport mode keeps values open when you start it and at idle but closes them at a higher RPM I believe 4500 but not positive as I never drive in this mode, again I don't like the sound it produces and thats probably bc of headers. One thing I didn't know is the system automatically defaults to this setting when you turn it off then on when your dial on the dash is set to track. When your dial is set to touring it won't go to sport it will stay in touring. This is bc track is "illegal" for street use. Then there is track mode, my favorite mode and one I keep it in 99 of the time. Open valves 100 of the time and music to my ears. The last mode is custom where you can create a custom exhaust map based on RPM/throttle and speed. This is really cool but I find myself not using it as much as I thought. I feel like most of us are the same in this regard from people I have talked to, when a car has all sorts of modes we keep it in one and barley use the rest. Thats how I feel about this system and I knew that when I was buying it. I got this system to have the ability to dial it down and for that it works great. Every mode works as advertised and the quality of the parts are fantastic. I would only recommend this to people having an extremely loud exhaust that needs the ability to quite it with a single dial.

    Johns

    Year: 2015 Submodel: GT

    Helpful (1)

  • 5/5

    August 02, 2016

    Excellent product

    Pretty easy install process although I did have a local audio installer finish the job from the dash to completion. The active exhaust works well and is very useful for when I want to turn the volume down around my home. The custom tune feature is really cool too and I've had zero problems connecting to the app on my iPhone. Be sure to select Vlink as the wifi network. I used the exhaust system in open or track mode for about a week before having this installed. While I loved the loud aggressive sound there were times and places that I wished I could tune it down a bit. Definitely worth the money and would not want to go back to manual mode.

    Chris

    Year: 2016 Submodel: GT

    Helpful (1)

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