Milltek Sport Ford Focus Mk3 RS Active Valve Control

Description

Milltek Sport Ford Focus Mk3 RS Active Valve Control

The Milltek Sport Active Valve Control (AVC) unit gives you full command over your Focus RS exhaust valve, letting you decide when your car sounds civil and when it really makes itself heard. By tapping into the vehicle’s CAN BUS (the car’s internal communication network), the AVC takes over valve operation from the factory ECU and hands it directly to you through a smartphone app.

For owners of the Mk3 Focus RS who want more control over their exhaust note, this is a straightforward way to override the standard valve behaviour without permanent modification.

What the Active Valve Control Does

Once installed, the AVC wires into the CAN BUS feed and pairs with your phone via the dedicated app. From there, you can:

• Open or close the exhaust valve manually at any time, regardless of driving mode
• Adjust the RPM ranges at which the valve opens automatically
• Tailor your exhaust note to suit the moment, whether that’s a quiet early morning departure or a louder, more aggressive tone on a spirited drive

Why It Makes a Difference

The factory valve control on the Focus RS is tied to drive modes, which means the exhaust only opens up under specific conditions. The Milltek AVC removes those restrictions and puts the decision in your hands. You get the full character of your Milltek valved exhaust system whenever you want it, and you can keep things quiet when you don’t.

It’s a simple but effective upgrade that genuinely changes how usable a valved performance exhaust is day to day.

Fitment

This AVC unit is designed specifically for the Ford Focus Mk3 RS when paired with a compatible Milltek valved exhaust system. Please use the vehicle lookup tool or check the Vehicle Fitment tab to confirm compatibility with your car and existing exhaust setup.

Note: This product is intended to be used in conjunction with a Milltek valved exhaust system. It will not add a valve to a non-valved system.

About Milltek Sport

Milltek Sport designs and manufactures performance exhaust systems in the UK, supplying more than 90 countries worldwide. Their research and development team continually expands the range to cover the most in demand performance vehicles, making Milltek one of the most accessible and respected aftermarket exhaust brands available.

Installation

Typical fitting time is around 1 to 1.5 hours, which includes removing the original equipment system where required. If you are not confident wiring into the CAN BUS, we recommend having the AVC installed by a qualified technician to avoid any electrical issues.