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Armytrix Audi S3 Sedan (2013-2020) Valvetronic Exhaust System

SKU AUVS4-QS11C
Price

£2,920.50

Awaken the full sound and performance potential of your Audi S3 8V Sedan with the Armytrix Valvetronic Exhaust System—precision-engineered to deliver aggressive tone, improved flow, and total control at your fingertips. Designed specifically for the 2.0L turbocharged S3 Sedan (2013–2020), this system blends motorsport-grade construction with smart tech for a refined, high-performance driving experience.

 

Constructed with a 3” mandrel-bent stainless steel main pipe, the system significantly enhances exhaust flow and throttle response. Wireless remote control and smartphone app integration allow you to open or close the valves instantly, switching between a quiet cruise or full-throttle soundtrack. Whether you're rolling out discreetly or unleashing turbocharged fury, you're in command.

 

Perfectly suited for both OPF and non-OPF models, the system supports flexible integration with stock or upgraded components. VIN verification ensures correct fitment prior to installation.

 

Key Features:

  • Designed for Audi S3 8V Sedan 2.0L Turbo (2013–2020)

  • Main pipe diameter: 3” – optimised for performance and sound

  • Valvetronic system controlled via Armytrix App & Remote (iOS & Android)

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

  • Built-in fault-clearing tech reduces CEL risk for cat/OPF modifications

  • Plug-n-play OBDII module – 30% faster installation than traditional cable systems

  • Fits both Left-Hand Drive (LHD) and Right-Hand Drive (RHD) vehicles

 

Exhaust Configuration Options:

To accommodate a variety of OEM and aftermarket setups, the system includes:

  • Reducer (65mm → 3”) – for Armytrix cat-back connection to stock catalytic converter

  • Reducer (3” → 65mm) – for Armytrix downpipe connection to OEM cat-back

  • Use your VIN to verify OPF or non-OPF compatibility before ordering

 

Wireless Valve Control via OBDII Module:

Armytrix OBDII Control Module is REQUIRED

Connects directly through your vehicle’s OBDII port for true plug-n-play installation. Adjust valve modes instantly via:

  • ON – Valves fully open for maximum sound and performance

  • OFF – Valves closed for a quieter, more subtle drive

  • AUTO – Adaptive valve control based on RPM and throttle position

All valve functions are accessible via the remote key fob or Armytrix smartphone app.

 

Exclusive Check Engine Light Prevention System:

 

This exhaust system features Armytrix’s proprietary catalytic converter and OPF fault code clearing mechanism, significantly reducing the risk of CELs when upgrading to high-flow downpipes or de-catted systems—ideal for tuned or modified setups.

 

Fitment:

Audi S3 8V Sedan 2.0L Turbo (2013–2020)

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All purchases on this website our subject to our Terms and Conditions. Please ensure you have read and understood these before making a purchase. If you have any questions, please feel free to contact us and we will endeavour to answer any questions you may have.

 

PLEASE BE AWARE: Sports cats can NOT legally be installed on a vehicle for use on a public road that was manufactured after 1st March 2001 unless type ECE 103R approved - this can be identified in either the product description and/or in the Technical Information section listed. If you have any doubt on this approval, please contact us immediately for confirmation. Fitting a De-Cat/Cat Bypass, DPF delete/bypass or GPF delete/bypass to a vehicle that is to be used on UK roads will cause the vehicle to fail the MOT emissions test, therefore rendering it unroadworthy and illegal to be used on the road. Therefore, any such products are strictly sold as off-road or motorsport use only and NOT for road use. The vehicle should be transported from place to place via a trailer, flatbed or other recovery means.

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