IRL V2 Valve Controller: Installation & How-To Guide for BMW G8X

What Does the IRL V2 Valve Controller Do?

The IRL V2 Valve Controller Plug & Play gives you convenient control over the exhaust valves on a compatible valved system. Keep the car quieter for daily driving, then open the valves when you want a more aggressive exhaust note.

Compatibility

This guide is written for BMW G8X owners running a compatible valved exhaust setup, including the G80 M3, G82 M4, and G83 M4 Convertible. It pairs naturally with the IRL V2 G80 G82 G83 Catback Valved Exhaust.

Before ordering, confirm that your exhaust system has the valve hardware and connectors required for the controller. If you are unsure, contact IRL with your vehicle year, chassis, and current exhaust setup.

Before You Start

• Park the vehicle on a level surface and let the exhaust cool completely.
• Have the controller, supplied harness or connectors, and any included mounting hardware ready.
• Keep the vehicle switched off while making connections.
• Read the included product instructions before routing or securing wiring.
• Plan a clean, protected wire route away from exhaust heat, moving suspension parts, and sharp edges.

Installation Checklist

1. Locate the valve connection

Identify the valve actuator connection on your compatible exhaust system. If the system is already installed, access may require removing a small amount of underbody trim. Never work near a hot exhaust.

2. Connect the controller

Connect the controller using the supplied plug-and-play connections. Do not force a connector or modify the harness. If a connection does not seat cleanly, stop and confirm that you have the correct connector and orientation.

3. Route and secure the wiring

Route the harness along a protected path and secure it so it cannot contact the exhaust, driveshaft, tires, or suspension. Leave enough slack for normal movement, but avoid loose loops that can snag.

4. Recheck the installation

Before turning the vehicle on, verify that every connection is fully seated and that the wiring is clear of heat and moving parts. Reinstall any trim or shields removed during access.

5. Test valve operation

Start the vehicle and test the valve-control functions in a safe location. Confirm that the exhaust changes behavior when you command the valves open and closed. If the valves do not respond, switch the vehicle off and use the troubleshooting checklist below rather than repeatedly cycling an uncertain connection.

Daily-Driving Setup Tips

• Use the quieter valve setting for cold starts, neighborhoods, and long highway drives.
• Use the open setting when you want more sound under acceleration, where legal and appropriate.
• Remember that exhaust volume, emissions compliance, and noise rules vary by location. Check your local requirements before driving on public roads.

Troubleshooting

The valves do not move

• Turn the vehicle off and recheck each plug-and-play connection.
• Confirm the wiring is not pinched, stretched, or touching a hot component.
• Check that the exhaust valve hardware itself is not seized or obstructed.
• Review the supplied instructions for the correct setup sequence.

The controller works intermittently

• Inspect the harness routing and connector seating.
• Move the harness away from heat and vibration points.
• Check for water or debris at exposed connections.
• Contact IRL support if the issue continues, and include your chassis, exhaust configuration, and a description of the behavior.

Pair It With Your G8X Exhaust Setup

The controller is most useful when matched with a valved system that lets you choose between comfort and volume. Start with the IRL V2 G80 G82 G83 Catback Valved Exhaust, or browse the G80 / G82 / G83 M3 collection for other platform parts.

Already running an IRL catback? The IRL V2 Valve Controller is a simple way to add more control to your exhaust setup without changing the character of the system itself.

Final Check

After installation, take a short test drive and listen for rubbing, rattling, or unusual valve behavior. Reinspect the harness after the first drive, then enjoy having quieter and louder settings available when your build calls for them.