Valved Exhaust System for Audi TT / TT Roadster 8S 2.0 TFSI (2015-2023)
Configuration
Audi TT / TT Roadster 8S 2.0 TFSI Valved Exhaust System (2015-2023)
Valves
Operated by remote control, factory-paired.
Estimated at 0.50 m from the outlet, 45°, 2,000 rpm with a warm engine. Allow ± 2 dB depending on the engine and measuring point. A 3 dB difference is audible in a direct comparison; 10 dB sounds roughly twice as loud.
Configuration guide
Sound intensity with the valves open, on a scale of 0 to 10.
| Configuration | Intensity |
|---|---|
| Decat downpipe + Rog cat-back | 10/10 |
| 100-cell sports catalytic converter + Rog cat-back | 9/10 |
| 200-cell sports catalytic converter + Rog cat-back | 8/10 |
| Rog cat-back only, factory catalytic converter retained | 7/10 |
| Factory exhaust, for comparison | 3/10 |
The Audi TT / TT Roadster 8S 2.0 TFSI exhaust in detail.
The third-generation TT, type 8S, kept the turbocharged 2.0 TFSI four-cylinder from 2015 to 2023, at several outputs depending on the model year: from 197 hp and 320 Nm to 245 hp and 370 Nm for the facelifted 45 TFSI. All share a factory exhaust tuned to stay discreet. The TTS 8S and the five-cylinder TT RS 8S have their own page.
Yet the TT 8S’s TFSI only needs a better-designed layout to gain character: with the valves open, our valved cat-back replaces the factory trickle of sound with a full tone and crackles on the overrun, then everything becomes hushed again as soon as you close them. The aim is a rewarding, controlled voice, not volume at any cost.
Four round exits finish the system, fixed with clamps and gaskets, without welding, in about two hours. The valve actuation on the TT 8S is not documented in our records: if yours has factory valves, we check via the VIN that their control can be retained; otherwise, the Rog remote, with its box in the boot, operates them at the press of a button.
Here the “Manifold” option corresponds to the downpipe, which leaves the turbo and contains the catalytic converter. As the TT is often used every day, we recommend the 200-cell version, which keeps emissions control; the 100-cell is accepted or not depending on the car and the rules in your country, while the decat version is reserved for track use. As long as the map remains Audi’s, it brings sound and a little less weight, but no horsepower. Both materials in the catalogue apply to the TT 8S: 304 stainless steel with a round sound, titanium around 40% lighter and clearer at high revs.
Audi TT / TT Roadster 8S 2.0 TFSI exhaust specifications.
| System type | Valved cat-back (valve exhaust), four round tips, built to your VIN |
|---|---|
| Vehicles and chassis code | Audi TT 8S 2.0 TFSI coupé and Roadster |
| Engine | 2.0 TFSI, turbocharged four-cylinder, 197 to 245 hp and 320 to 370 Nm depending on the version |
| Years | 2015-2023 |
| Materials and finishes | 304 stainless steel or titanium; titanium in brushed, gold or purple |
| Valves | Factory control if fitted (checked via the VIN), otherwise the Rog remote |
| Front section (option) | Downpipe with 200-cell or 100-cell catalytic converter, or decat |
| Fitting | Clamps and gaskets, no welding, about 2 hours |
| Manufacturing and delivery | Made to order, 20 working days, free delivery |
| Warranty | 3 years, parts and workmanship |
Questions about the Audi TT / TT Roadster 8S 2.0 TFSI exhaust.
Do all power outputs of the TT 8S 2.0 TFSI share this exhaust?
The page covers the TT 8S 2.0 TFSI from 2015 to 2023, across all power outputs. Your VIN, requested with the order, lets us confirm your version’s compatibility before manufacturing.
Which Stage 2 is published for the TT 8S 45 TFSI?
The cat-back imposes no ECU remap. The 340 hp and 470 Nm published for the 245 hp 45 TFSI assume the downpipe and a new map at an approved tuning centre.
Vehicle inspection: what precautions for a valved TT 8S?
Close the valves and the four-cylinder returns to its stock sound. Gas treatment does not change as long as the TT keeps the cat-back alone or the 200-cell downpipe. For a 100-cell downpipe, everything depends on the car and the rules in your country; in decat form, it restricts the TT to track days.
Does this apply to my TT 8S Roadster?
Yes. The TT 8S coupé and the TT 8S Roadster take the same Rog system: same chassis, same 2.0 TFSI, same clamp-and-gasket fitting. Your VIN is only used to confirm the version and model year before manufacturing.
Audi TT / TT Roadster 8S 2.0 TFSI: Does a valved exhaust system drone?
No. With the valves closed, the gases flow through the whole rear silencer and the cabin stays calm at a steady speed. Our Rog exhausts are designed to avoid drone. Learn more: Why our systems stay calm on the motorway.
Audi TT / TT Roadster 8S 2.0 TFSI: straight pipe or resonator?
On this model, two characters at the same price: the straight pipe for the raw sound of your engine, unfiltered, or the resonator for a rounder and slightly softer voice. Either way, the exhaust stays fully sporty. Learn more: Exhaust resonator: what does it do? Straight pipe or resonator, which sound to choose.
Rog expert guide
Audi TT / TT Roadster 8S: the complete exhaust system guide
The TT 8S is a stylish, effective coupé whose factory sound is non-existent. The gap between the looks and the silence is real. Our exhaust system fills that gap with a sporty, rewarding tone that turns discreet again with the...
In detail
Rog Advisor
A question about this exhaust?
Fitment, sound, catalyst, valves, delivery: the answer comes straight away, with your configuration in context.
The Rog Advisor is an automated assistant trained on our product pages and answers. For an important decision, write to us: we confirm by e-mail.
Unsure about your configuration? Talk to us before you order. We know your car. Write to us at contact@rogmotorsport.com: we reply in writing, in English, within 24 hours. Email us
Your country
Rog in the UK.
The MOT and your exhaust
At the MOT, exhaust noise is judged by ear, with no sound meter: valves closed, your car sounds very close to stock. A cat-back leaves your factory cat and sensors untouched, a 200-cell sports cat keeps emissions control, and the MOT tester decides.
On the road
Valves closed around town, your car sounds very close to stock, and you open them whenever you like. Where councils use noise cameras, they target behaviour such as revving and racing.
Your documents
Each system is built from the VIN on your V5C, and an exhaust isn't one of the changes you record on it. We send the technical documentation free on request, for the MOT or for your insurer.
Your insurance
Insurers usually want to know about modifications, so let yours know: our free technical documentation makes it easy.
Reviews imported from our previous system and translated from French; verified purchases carry the badge.
Rog presentation film: choosing your vehicle, Standard or Equal Length design, stainless steel or titanium, Z-Pipe, controlled valves, titanium and tip finishes, and support from choosing your configuration through to shipping.
THE Rog CRAFT
Our process.
From the first bend to the last check. The same care at every step.
-
Design
Designed for your vehicle.
Geometry matched to your model, carefully studied bends and precise mounting points. Everything starts with accurate design.
-
Manufacture
Crafted with precision.
Tube bending, part fitting and TIG welding: every joint receives the same care.
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Finishing
Material, elevated.
The finish reveals the character of the metal. Stainless steel or titanium, depending on the options available for your vehicle.
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Assembly
Every part in its place.
Components are assembled and adjusted. On valved systems, the mechanism is fitted, set up and tested.
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Inspection
Check. Then approve.
Geometry, welds, connections and gas flow: the key points are inspected before shipping.
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Shipping
Ready to join you.
Reinforced packaging protects your exhaust in transit. The final step before giving your vehicle a new voice.
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