Armytrix Audi S3 Sportback (2013-2020) Valvetronic Exhaust System
Awaken the full sound and performance potential of your Audi S3 8V Sportback 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 (2013–2020), this system blends motorsport-grade construction with modern tech for a refined, thrilling driving experience.
Constructed with a 3” mandrel-bent stainless steel main pipe, this system significantly improves exhaust flow and throttle response. The system’s wireless remote control and smartphone app integration allow you to open or close the valves instantly, switching between stealth mode and full-blown turbo roar. Whether you're leaving quietly or making your presence known, you're in full control.
Ideal for both OPF and non-OPF models, this system includes VIN-specific fitment verification and reducers to support flexible configuration with stock or upgraded components.
Key Features:
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Designed for Audi S3 8V Sportback 2.0L Turbo (2013–2020)
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Main pipe diameter: 3” – optimised for performance and sound
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Valvetronic system controlled via Armytrix App & Remote (iOS & Android)
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Direct bolt-on fitment – no cutting or welding required
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Built-in fault-clearing tech reduces CEL risk for cat/OPF modifications
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Plug-n-play OBDII module – 30% faster installation than cable-based systems
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Fits both Left-Hand Drive (LHD) and Right-Hand Drive (RHD) vehicles
Exhaust Configuration Options:
To accommodate a wide range of configurations, the system includes:
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Reducer (65mm → 3”) – for Armytrix cat-back connection to stock catalytic converter
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Reducer (3” → 65mm) – for Armytrix downpipe connection to OEM cat-back
Use your VIN to verify compatibility with OPF or non-OPF models prior to ordering.
Wireless Valve Control via OBDII Module: Armytrix OBDII Control Module is REQUIRED
Connects through the vehicle’s OBDII port for full plug-n-play installation. Control valve modes in real-time via:
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ON – Valves fully open for maximum volume and flow
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OFF – Valves closed for quieter, subdued driving
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AUTO – Adaptive mode based on RPM and throttle input
All control is available via remote key fob or Armytrix app on your smartphone.
Exclusive Check Engine Light Prevention System:
This exhaust system includes Armytrix’s proprietary catalytic converter & OPF fault code clearing mechanism, helping to minimise CEL triggers when paired with high-flow downpipes or full systems—ideal for modified or tuned vehicles.
Fitment:
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Audi S3 8V Sportback 2.0L Turbo (2013–2020)
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T&C's
T&C's
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.
Stock Availability
Stock Availability
Due to the high volume of custom orders and special requests we receive daily, it’s not always possible to have every item readily available in our warehouse at all times. While we strive to maintain stock for popular products, some items may require additional processing time. If you need a product urgently, we highly recommend reaching out to our sales team here before placing your order to confirm availability and estimated delivery times.
Please Note:
- Orders with both in-stock and backorder or out-of-stock products will be dispatched once all products are available to ship together.
- Contact our sales team if you want your parts fitted to your vehicle at our Bristol Headquarters.
- Shipping estimates are based on courier delivery times and don't include time to despatch.
Delivery & Returns
Delivery & Returns
At AT Store, we understand the importance of timely delivery when it comes to your orders. Our goal is to have your products shipped on the same day we receive your order. We prioritise efficiency and strive to provide you with a seamless delivery experience.
Same-Day Shipping
We aim to dispatch your orders promptly to ensure minimal waiting time for our customers. Orders received before 15:00 (GMT) on business days will typically be processed and shipped on the same day. Orders received on weekends/holidays will be processed on the next business day.
Communication on Delays
While we make every effort to ship your orders promptly, there may be unforeseen circumstances or stock availability issues that could cause delays. In such cases, a dedicated member of our sales team will personally reach out to you to inform you of any delays and provide updates on the status of your order.
Akrapovic Products Lead Time
Please note that for Akrapovic products, there may be a lead time of up to 10 working days depending on current stock levels. Our team will inform you promptly if your order falls within this category and provide you with an estimated delivery date.
Tracking Information
Once your order has been dispatched, we will provide you with a tracking number via email. Additionally, the tracking number will be added to your order notes on our website. This allows you to easily track the progress of your delivery and stay informed about its whereabouts until it reaches your doorstep.
International Shipping
We now calculate international shipping costs separately to ensure the most accurate and competitive rates. If you’re placing an order from outside the UK, please contact us for a shipping quote before completing your purchase. Our team will provide you with the best available options tailored to your location.
We are committed to providing you with the best possible delivery service, ensuring that your orders reach you in a timely manner and in pristine condition. If you have any questions or concerns regarding our delivery process, please don't hesitate to contact us for assistance.
For information regarding Returns, please refer to our T&C's.
Email: Store@avontuning.co.uk
Phone: 01454 800 117
Online we currently accept payment from the methods listed above including a wide range of finance options.
Finance Options
In order to get the kit you want, when you need it, without ruining the family finances we offer a highly flexible range of finance options to help you get the best products on your vehicle now rather than at the end of the season when you've saved up the cash to make the purchase. There are even interest free options which effectively spread the cost without costing you any extra.
Avon Tuning Limited is an Introducer Appointed Representative of Social Money Limited t/a Payl8r who is authorised by the FCA under Ref. Number 675283. Credit is subject to creditworthiness and affordability assessments. Missed payments may affect your credit file, future borrowing and incur fees.
What Our Customers Are Saying
Mark W.
“Thanks to James and Marcus at Avon Tuning for arranging and fitting a Quicksilver exhaust to my new Defender V8. Everything went like clockwork and it sounds awesome”
Paris C.
"Would highly recommend Avon Tuning. They're extremely knowledgeable, outstanding customer service - we even had a lovely courtesy car for the few hours they had ours. You're in good hands with Avon Tuning!"
Richard N.
"I’d give 6 stars if they’d let me! Avon Tuning did the most fantastic job. I arranged everything with James at the beginning and he was so helpful, guiding me to the correct exhaust system (Miltek) and a Stage 1 Remap"
Peter B.
"Amazing service from James and the team at Avon Tuning.Fitted a new exhaust system on my Aston Martin Vantage, not only does it sound and look great but it puts smiles per miles for me."
