Valved Exhaust System for Audi A4 / A5 B8 2.0 TFSI (2008-2016)
Configuration
Audi A4 / A5 B8 2.0 TFSI Valved Exhaust System (2008-2016)
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 |
AudiA4 / A5 / S4 / S5 / RS4 / RS5 B8 / 8T
The Audi A4 and A5 B8 2.0 TFSI exhaust in detail.
Here is the exhaust for the A4 and A5 B8 2.0 TFSI, from 2008 to 2016: a direct-injection turbocharged inline four-cylinder, tuned to between 180 and 230 hp depending on the version. The thrust arrives early and makes these Audis lively in town as on the dual carriageway. The more recent B9s, the naturally aspirated A4 B8 3.2 FSI, the S4 and S5 B8 or the S5 V8 each have their own page.
On this turbo, the turbine already dampens part of the pulses, and the factory exhaust smooths out the rest into a neutral purr. The valved Rog cat-back opens the way: a frank grain at start-up, acceleration you can hear, a few crackles on lift-off. With the valves closed, your A4 or A5 regains the discretion of a cruiser, the one for long motorway stages.
Fitting requires neither welding nor cutting, just band clamps, gaskets and about two hours on a lift, with round tailpipes. The valves are controlled through the driving modes if the car has them from the factory; otherwise, the Rog remote, whose unit finds its place in the boot.
To go further, this page’s “Manifold” option replaces the downpipe, which runs from the turbo and houses the catalytic converter. Because the A4 and A5 B8 are often everyday cars, the 200-cell downpipe, which leaves emissions control in place, is the most coherent choice; the 100-cell is accepted or not depending on the vehicle and your country’s rules, and the decat version is reserved for track use. Without an ECU remap, it gives sound and lightens the system slightly, without adding power. As for the material, 304 stainless steel gives this four-cylinder a full sound, while titanium, around 40% lighter, makes it clearer at high revs and comes in brushed, gold or purple.
Audi A4 / A5 B8 2.0 TFSI exhaust specifications.
| System type | Valved cat-back (valve exhaust), round outlet pipes |
|---|---|
| Vehicles and chassis code | Audi A4 and A5 B8 2.0 TFSI, body style confirmed by the VIN |
| Engine | 2.0 TFSI, direct-injection turbocharged four-cylinder, 180 to 230 hp and 320 to 350 Nm depending on the version |
| Years | 2008-2016 |
| Materials and finishes | 304 stainless steel or titanium; titanium in brushed, gold or purple |
| Valves | Factory valve control if the car has it, 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 from confirmation to delivery, free delivery |
| Warranty | 3 years, parts and workmanship |
Questions about the Audi A4 / A5 B8 2.0 TFSI exhaust.
My A4 or A5 B8 is older than 2016: does the system fit it?
Yes. The page covers the 2008 to 2016 A4 and A5 B8 2.0 TFSI: the A4, built until 2015 in Europe and until the 2016 model year in North America, and the A5, built until 2016. The system is built to your VIN, which confirms the version and body style before manufacturing.
Does the A4 B8’s 225 hp 2.0 TFSI need an ECU remap for the system?
Not for the cat-back, which keeps Audi’s map. Yes if you want to make the most of the downpipe: the published Stage 2 figures for this 225 hp engine are 305 hp and 462 Nm, at an approved tuner.
With this system, how does the A5 B8 present at vehicle inspection?
With the valves closed, the four-cylinder regains its ex-factory discretion. Nothing changes on emissions control as long as the car keeps the cat-back alone or the 200-cell downpipe. For a 100-cell downpipe, the decision depends on the vehicle and your country’s rules; in decat form, the A5 only runs on track.
What is the difference from the A4 and A5 B9 system?
Same engine family, but a different generation: the 2017 to 2021 B9 has its own page, with its 190 and 252 hp versions. Choose the one that matches your registration document, and we confirm by VIN.
Audi A4 / A5 B8 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 A4 / A5 B8 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 A4 / A5 B8 and B9: the 2.0 TFSI out loud, the exhaust system guide
From the A4 / A5 B8 to the A4 / A5 B9, Audi kept the same recipe: a 2.0 TFSI, a turbocharged four-cylinder with 225 hp in the B8 and 190 hp in the B9, in cars as polished as...
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
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.
-
Finishing
Material, elevated.
The finish reveals the character of the metal. Stainless steel or titanium, depending on the options available for your vehicle.
-
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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