Armytrix Audi RS4 OPF Valvetronic Exhaust - with Wireless Remote Control Kit

Armytrix Valvetronic Exhaust System + OBDII Wireless Control – Audi RS4 B9 Avant 2.9 V6 Turbo OPF (2019–Present)

Enhance your Audi RS4 B9 Avant (2019–Present) 2.9 V6 Turbo OPF with the cutting-edge Armytrix Valvetronic Exhaust System, now supplied with the OBDII Wireless Control Kit for total sound management at your fingertips.

This high-performance 3.5" main pipe cat-back system delivers race-inspired acoustics, increased flow, and seamless integration with either the OEM valvetronic control or the ARMYTRIX Plug-n-Play OBDII module. Using the wireless OBDII kit, drivers can control exhaust valve positions via the Armytrix mobile app, offering on-demand sound customization for every driving scenario.

Designed as a direct bolt-on for both left-hand drive and right-hand drive RS4 B9 models, the system also features an exclusive catalytic converter and OPF-related fault-code clearing mechanism to help reduce the chance of a check engine light.

For models equipped with vacuum-based valves, the OBDII module is required, and OEM valve delete boxes (2 units per car) are highly recommended to prevent limp mode after installation. VIN verification is required to ensure the correct versions of downpipes and front pipes.

Purchasing the EV Version full system (Cat-Back + Downpipe) includes the Armynator, unlocking AUTO mode functionality for a refined and intuitive exhaust experience.

Key Features:

• Fitment: Audi RS4 B9 Avant 2.9 V6 Turbo OPF (2019–Present)

• Fits LHD and RHD vehicles

• Supplied with ARMYTRIX OBDII Wireless Control Kit

• 3.5” main pipe diameter for maximum performance and sound

• Direct bolt-on installation – no cutting or welding required

• Choice of OEM exhaust valve integration or wireless app control

• Catalytic converter & OPF fault-code clearing mechanism – reduces risk of CEL

• Vacuum valve support with OBDII module (not compatible with other OBDII devices)

• OEM valve delete boxes recommended (2 per vehicle; VIN verification required)

• Full EV system includes Armynator for AUTO mode and enhanced valve control

• Multiple versions of downpipes/front pipes available – VIN required for fitment confirmation

Upgrade your RS4’s exhaust system with Armytrix – delivering performance, control, and sound without compromise.