RS6 RS7 Valve Controller – ExValve by ASR for Audi C8 Performance Exhaust Control

Full Control Over Your Exhaust Sound, Anytime

While the Audi RS6 and RS7 C8 are known for their aggressive performance, Audi’s ECU-controlled exhaust valves can limit your control over when — and how — that power sounds. Fortunately, the RS6 RS7 Valve Controller from ExValve by ASR gives you full manual control, letting you open or close the valves anytime using a simple remote.

Because every situation is different, from cold starts to high-speed runs, this module gives you the flexibility Audi left out.

Made for Audi RS6 and RS7 C8 Models (2019+)

This ExValve controller is designed specifically for the Audi RS6 Avant and RS7 Sportback (C8) platform with the 4.0L twin-turbo V8. Therefore, it connects seamlessly to your factory exhaust valve harness using OEM-grade connectors — no cutting, coding, or flashing needed.

Fitment:

• Audi RS6 Avant C8 (2020–present)

• Audi RS7 Sportback C8 (2020–present)

• Compatible with stock or aftermarket valved exhausts

Looking to go even further? Pair this upgrade with our Akrapovič Evolution Titanium Exhaust for RS6/RS7 for a full race-ready experience.

Three Valve Modes for Total Acoustic Freedom

This system gives you instant access to three different exhaust modes — all controlled via the included key fob:

• Open Mode: Valves stay fully open for the loudest, rawest sound

• Close Mode: Valves remain closed for quiet startups and daily cruising

• Auto Mode: Valves follow the factory ECU behavior (as normal)

Since you can switch modes anytime, whether idling or in motion, you’re always in control of your exhaust’s tone and behavior.

Plug & Play Install with OEM Integration

This controller uses T-harness-style OEM connectors, allowing for a fully reversible, plug-and-play installation. There’s no need for a software flash or permanent modification.

Installation Overview:

1. Lift the car and locate exhaust valve connectors

2. Disconnect OEM plugs

3. Insert ExValve module inline

4. Mount control box using provided hardware

5. Test operation with remote fob

Because of the non-invasive design, this is ideal for leased vehicles, warranty-protected cars, and daily drivers.

Clean Integration with No CELs or Warning Lights

Thanks to built-in load resistors and CAN-safe logic, the ExValve system mimics factory valve signals. Therefore, it avoids setting off check engine lights or throwing fault codes — something many budget modules fail to prevent.

Benefits:

• Retains factory driving modes (Comfort, Auto, Dynamic)

• Maintains full ECU communication

• Allows dealership servicing and OBD scanning

• No battery drain or interference

If you demand performance and peace of mind, this is the perfect exhaust valve solution.

Pair With Aftermarket Exhaust Systems

Because many performance exhausts retain factory valve motors, the ExValve controller is fully compatible with leading aftermarket brands:

• Akrapovič Evolution Line – Audi C8

• Milltek Sport RS6/RS7 Valved Cat-Back

• IPE Innotech RS6/RS7 Valved System

Whether you’re enhancing sound, performance, or both, ExValve gives you full command of your new system.

Compact Remote Operation with Instant Feedback

The included wireless remote is compact, ergonomic, and easy to use. It includes dedicated buttons for each mode and provides quick response — even from outside the vehicle.

Because it uses RF (not Bluetooth), signal interference is not an issue, and the controller responds even when the ignition is off. Many users choose to mount it in the cabin, center console, or glovebox.

Built for Long-Term Reliability

Because of the RS6 and RS7’s high operating temperatures and daily drivability, ExValve uses premium components built to withstand harsh conditions. The control box is sealed, heat-rated, and shock-resistant.

Additionally, each unit is individually tested for signal integrity and electrical load safety before shipping.

Why Choose ExValve by ASR?

Although cheaper alternatives exist, very few offer the same OEM-grade integration, reliability, and control as ExValve. Built by enthusiasts for enthusiasts, this is a serious upgrade that complements the RS6/RS7’s already formidable character.

Why It’s Better:

• Plug-and-play install

• 3 switchable modes

• Error-free operation

• Compatible with OEM and aftermarket exhausts

• Safe for warranty and service use

Pair it with our RS6/RS7 Carbon Rear Diffuser or C8 RS Front Lip Splitter for a complete performance upgrade package.