Milltek Cat-back Exhaust for Audi RSQ8 4.0 V8 Bi-Turbo (Non OPF/GPF Equipped Models) (2020 onwards) – Sharper Sound, Reduced Back Pressure
This is Milltek's cat-back system for the Audi RSQ8 4.0 V8 Bi-Turbo (Non OPF/GPF Equipped Models). It replaces everything from the factory catalytic converter rearward with wider-bore pipework, a re-profiled mid-pipe and silencers tuned specifically for this platform, cutting back pressure and sharpening the exhaust note. The factory catalytic converter stays in place, so the car's emissions hardware is left as standard. It's offered in non-resonated or resonated versions, so you can pick the setup that suits how the car's used.
It's aimed at owners who want a noticeably different sound and a genuine, if modest, flow improvement without touching anything upstream of the cat: a straightforward bolt-on that doesn't need a remap or any other supporting mods to enjoy.
Specifications
-
System Type: Cat-back
-
Pipe Diameter: 76.2mm (3")
-
EC Approved: No
-
Race System: No
-
Fitting Time: approx. 3 to 4 hours (Milltek figure)
Key Features
- Made from T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration
- Mandrel-bent pipework keeps a constant diameter through every bend for unrestricted flow
- 76.2mm (3") pipework
- Replaces the standard exhaust from the catalytic converter back, so the factory cat is retained
- Resonated (quieter) or non-resonated (louder) versions
- Designed, developed and manufactured in the UK by Milltek Sport
Fitment
- Audi RSQ8 4.0 V8 Bi-Turbo (Non OPF/GPF Equipped Models) (2020 onwards)
- Audi RSQ8 4.0 V8 Bi-Turbo (OPF/GPF Equipped Models) (2020 onwards)
Not suitable for: Audi RSQ8 4.0 OPF/GPF models, or any model not listed above.
Installation
Milltek quotes a fitting time of approx. 3 to 4 hours. Some versions: Non-Resonated (Louder) - No Cutting Required - Fits with OE Trims. Some versions: Resonated - No Cutting Required - Fits with OE Trims. We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.
Upgrade Further
Also available from Milltek for this car: Milltek Active Suspension Control Audi RSQ8 4.0 V8 Bi-Turbo Non OPF/GPF 20+, Milltek Downpipe & De-cat Audi RSQ8 4.0 V8 Bi-Turbo Non OPF/GPF 20+.
What's the difference between the resonated and non-resonated versions?
The resonated version adds extra silencing for a quieter, more refined tone. The non-resonated version leaves it out, so it is louder and more aggressive.
Will it fit the Audi RSQ8 4.0 V8 Bi-Turbo (OPF/GPF Equipped Models)?
Yes. Milltek lists this part for the Audi RSQ8 4.0 V8 Bi-Turbo (OPF/GPF Equipped Models) as well as the other models in the fitment list above.
Is it road legal?
Milltek does not list EC approval for this part. Any exhaust used on the road must still meet noise and emissions rules, so check the requirements where you live.
Do I need a remap?
No. It fits behind the factory catalytic converter, so no software changes are needed.
Does it keep the factory catalytic converter?
Yes. It fits behind the factory catalytic converter, which stays in place.
How long does it take to fit?
Milltek quotes approx. 3 to 4 hours.
What is it made from?
T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.
Is there a warranty?
Yes. Milltek products are covered against defects in materials and workmanship. Contact us with your order number if you have a problem.
