Roush Active Exhaust Upgrade Kit ('15-'17 Mustang GT, EcoBoost)
Model Number: 421926
Converts Roush passive exhaust to active exhaust
Select between touring, sport, track, and custom exhaust notes
Custom programming with included Wi-Fi OBD2 interface and Roush iOS app
Compatible with Roush part nos. 421920, 421921, 421922, 421923
Fits 2015-2018 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.
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.
This Roush Active Exhaust Upgrade Kit is designed for use on 2015-2018 GT and EcoBoost Mustangs equipped with a Roush Quad Tip Axle-Back Passive Exhaust System - part nos. 421920, 421921, 421922 and 421923.