2015-2023 Roush Mustang Active Exhaust Upgrade Kit

Upgrade your Roush Quad Tip exhaust to a full Active exhaust system and gain complete control over your exhaust note. With our Active Exhaust upgrade kit, you can transform any 2015-2023 Active Ready quad-tip exhaust system into an active exhaust, allowing you to customize your exhaust sound using our iOS application. This opens up a world of sound possibilities, giving you the flexibility to fine-tune your vehicle's exhaust note to your liking.

Key Features:

- Utilizes an easily installed valve system to adjust exhaust flow, altering tone and volume.
- "Plug and play" installation requires no cutting or welding, ensuring a hassle-free upgrade.
- Kit includes a 4-mode selector knob with a faceplate, allowing you to switch between pre-set and custom modes on the go.

Experience the freedom to create a unique and personalized exhaust sound that matches your preferences with Roush's Active Exhaust upgrade kit. Elevate your driving experience and make your vehicle stand out from the rest.

**Please ensure compatibility with your specific quad-tip exhaust system before making a purchase.

Converts the following ROUSH Active Ready Quad Tip Exhaust Systems to Full Active Exhaust Systems:

• 5.0L V8 Active Ready Exhaust Part #421921 (discontinued)
• 2.3L I4 Active Ready Exhaust Part #421923 (discontinued)

Download the ROUSH Active Exhaust App for iOS

Download instructions for the Active Exhaust app

The ROUSH Active Exhaust system features four modes: TOURING, SPORT, TRACK, and CUSTOM.

TOURING mode can be selected to close the exhaust tailpipe valves completely and keep the exhaust volume at its absolute minimum – especially useful when you want to fly under the radar without waking up the neighbors.

SPORT mode allows the exhaust valves to open when the engine is idling and close during normal, non-aggressive driving. The valves open again when you step on it or drive at high speeds. These settings are pre-loaded to be more aggressive (louder) than stock, but are still legal for street operation. When the engine is running, the accelerator pedal position and vehicle speed are used to determine the position of the Active Exhaust valves.

TRACK mode is the loudest of the modes. This mode keeps the Active Exhaust valves fully open at all times when the engine is running and is typically used only on the track, as it is not legal for street operation.

CUSTOM mode allows the operator to employ an iOS application and Wi-Fi module attached to the vehicle’s diagnostic port to personalize the exhaust sound for unique calibration. Through the application, the user gains full control over the position of the valves based on vehicle speed and accelerator position.