Milltek Cat Back Exhaust Audi S3 2.0 TFSI Quattro Sportback 8V 8V.2 Non-GPF 13-18

Milltek Cat-back Exhaust for Audi S3 2.0 TFSI quattro Sportback 8V.2 (GPF Equipped Models Only) (2019-2020) – Sharper Sound, Reduced Back Pressure

This is Milltek's cat-back system for the Audi S3 2.0 TFSI quattro Sportback 8V/8V.2 (Non-GPF Equipped Models Only). 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, race non-resonated, race resonated or resonated versions, valved or non-valved versions and 7 tailpipe finishes, 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")
• Race System: No

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
• Choice of 7 tailpipe finishes: Cerakote Black Oval, Polished Oval, GT-100 Cerakote Black, GT-100 Polished, GT-100 Titanium, Cerakote Black, Polished
• EC approved versions available
• Valved versions available for switchable volume
• Resonated (quieter) or non-resonated (louder) versions
• Designed, developed and manufactured in the UK by Milltek Sport

Fitment

• Audi S3 2.0 TFSI quattro Sportback 8V.2 (GPF Equipped Models Only) (2019-2020)
• Audi S3 2.0 TFSI quattro Sportback 8V/8V.2 (Non-GPF Equipped Models Only) (2013-2018)

Not every version fits every car in this list. Check the fitment shown for the option you select.

Not suitable for: the Audi S3 2.0 TFSI quattro 3-Door 8V.2 (GPF Equipped Models Only), which needs the Milltek Cat-back Exhaust Audi S3 2.0 TFSI Quattro 3dr 8V.2 GPF 19-20; the Audi S3 2.0 TFSI quattro Saloon & Cabrio 8V.2 (GPF Equipped Models Only), which needs the Milltek Cat-back Exhaust Audi S3 2.0 TFSI Quattro Saloon Cabrio 8V.2 GPF 19-20; the Audi S3 2.0 TFSI quattro 3-Door 8V/8V.2 (Non-GPF Equipped Models Only), which needs the Milltek Turbo-back Exhaust & Sports Cat Audi S3 2.0 TFSI Quattro 3dr 8V 8V.2 Non-GPF 13-18.

Installation

We recommend professional fitting on a ramp. Once fitted, check the tailpipe alignment and re-check all clamps after the first few hundred miles.

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. Race versions are the loudest and are intended for track use.

Should I choose the valved or non-valved version?

The valved version lets you switch between a quieter tone and the full exhaust note. Choose non-valved if you want the same sound all the time.

Which tailpipe finishes are available?

You can choose from: Cerakote Black Oval, Polished Oval, GT-100 Cerakote Black, GT-100 Polished, GT-100 Titanium, Cerakote Black, Polished. The finish is cosmetic and does not change the sound.

Will it fit the Audi S3 2.0 TFSI quattro Sportback 8V/8V.2 (Non-GPF Equipped Models Only)?

Yes. Milltek lists this part for the Audi S3 2.0 TFSI quattro Sportback 8V/8V.2 (Non-GPF Equipped Models Only) as well as the other models in the fitment list above.

Does it fit the Audi S3 2.0 TFSI quattro 3-Door 8V.2 (GPF Equipped Models Only)?

No. For that car, choose the Milltek Cat-back Exhaust Audi S3 2.0 TFSI Quattro 3dr 8V.2 GPF 19-20.

Is it road legal?

Some versions are EC approved; check the EC Approved line in the specification for the option you choose.

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.

What is it made from?

T304L aircraft-grade stainless steel, which is anti-magnetic and resists discolouration better than lower grades.