Valved Exhaust System for Audi Q8 4M 55 TFSI 3.0 V6 (2019-2023)
Configuration
Audi Q8 4M 55 TFSI 3.0 V6 Valved Exhaust System (2019-2023)
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 Q8 4M 55 TFSI exhaust in detail.
The Q8 55 TFSI gets the EA839, a 3.0-litre petrol V6 boosted by a single turbo installed in the vee. It is rated at 340 hp and 500 Nm, with torque available early that moves this large coupé SUV effortlessly, paired with quattro drive. This page covers the 2019 to 2023 model years and the 55 TFSI version only; the twin-turbo V8 RS Q8 has its own system.
A turbo V6 has a hoarser voice than you might think, with a metallic grain under acceleration and the whoosh of the turbo in the background. In the Q8, the factory exhaust leaves only a muted noise, decent but without personality. With the valves open, our valved cat-back gives the V6 a deeper, fuller tone that accompanies every burst of acceleration; with the valves closed, the original calm returns for family journeys.
The “Manifold” option sold here replaces the EA839’s downpipe, the part that leaves the turbo and carries the catalytic converter; parts manufacturers list it as identical to that of the SQ5 FY and the third-generation 3.0 Cayenne. For a Q8 used as much for holidays as for weekday journeys, the 200-cell downpipe is the most sensible, as it keeps emissions control; the 100-cell one is accepted or not depending on the car and the rules in your country, and the decat is reserved for track use. As long as Audi’s engine management stays in place, the 340 hp does not move.
Round tips finish a system that a garage fits without welding, with clamps and gaskets, in about two hours. If the Q8 left the factory with valves, the system takes over their control; otherwise, the Rog remote, with two buttons and a box in the boot, handles it. For this SUV, 304 stainless steel remains the most popular choice, with titanium bringing around 40% less weight and brushed, gold or purple finishes.
Audi Q8 4M 55 TFSI 3.0 V6 exhaust specifications.
| System type | Valved cat-back (valve exhaust), round tips, built to your VIN |
|---|---|
| Vehicle and chassis code | Audi Q8 4M 55 TFSI |
| Engine | EA839, 3.0-litre turbo V6, 340 hp and 500 Nm |
| Years | 2019-2023 |
| Materials and finishes | 304 stainless steel or titanium; titanium in brushed, gold or purple |
| Valves | Factory valve control if fitted, 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 Q8 4M 55 TFSI 3.0 V6 exhaust.
Does the Q8 55 TFSI system also fit the Q8 45 TFSI?
Our data mentions several engines, but the page covers the 3.0 TFSI V6 version of the Q8 55 TFSI. For another engine, send us the VIN before ordering: we check what matches.
What does the page publish at Stage 2 for the Q8 55 TFSI?
The cat-back alone calls for no ECU remap. With the EA839 downpipe and a suitable map at an approved tuning centre, the page states 420 hp and 680 Nm, against 340 hp and 500 Nm as standard.
Vehicle inspection: does a modified Q8 55 TFSI have to return to its factory configuration?
No, simply closing the valves gives you back a V6 as discreet as on delivery. Its emissions control remains complete with the cat-back alone or the 200-cell downpipe. Beyond that, the 100-cell depends on the car and the rules in your country, while the decat is for track use only.
On the motorway, does the equipped Q8 stay quiet?
With the valves closed, the gases flow through the silencer and the cabin keeps the calm of a large SUV at a steady speed. You open them on a clear road, whenever you want.
Audi Q8 4M 55 TFSI 3.0 V6: 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 Q8 4M 55 TFSI 3.0 V6: 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 Q8 4M 55 TFSI V6: the coupé SUV that makes itself heard, the exhaust guide
The Q8 55 TFSI plays the coupé SUV card: taut lines, quattro all-wheel drive and a 3.0 turbo V6 that pulls this big vehicle along without ever straining. Everything is designed for comfort, right down to a factory exhaust that...
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.
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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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