Audi S3 (8Y) 5 door Sportback Valved Turbo Back Performance Exhaust

Audi S3 8Y Sportback full turbo-to-tailpipe valve-controlled exhaust system

Unlock the soundtrack your quattro hot hatch deserves. This premium stainless-steel, valve-compatible full system for the Audi S3 8Y 5 door Sportback transforms response and tone while maintaining factory drive-mode control. Developed by Cobra Sport and proven on road and track, it replaces everything from the turbo outlet to the tips for a true full-system upgrade.

Why owners choose this setup

• Valve control retained: works with Audi Drive Select for quiet to aggressive sound at the press of a button.
• Bigger-bore pipework: 3 inch 76.2 mm TIG-welded stainless steel for freer flow and reduced back pressure.
• High-performance catalyst option: 4.5 inch 114.3 mm 200 cell sports cat for high flow and strong tuning potential.
• Choice of sound levels: resonated for refined performance or non-resonated for a louder, more motorsport tone.
• Direct-fit complete system: replaces front section, centre section and rear assembly for a seamless upgrade.

Sound and drivability

On the EA888 2.0 TFSI, this free-flow design releases a deeper idle, crisper upshifts and a purposeful growl under load, with valve-closed civility for daily driving. Open the valves and enjoy a more intense, engaging note that suits spirited use and track time.

Options explained

• Resonated: includes centre silencer for a subtle but sporty tone.
• Non-resonated: removes the centre silencer for a louder, more aggressive exhaust note.
• Sports cat: 200 cpsi high-flow catalyst for strong gas velocity and future remap potential.
• De-cat: for motorsport and off-road use only worldwide.

Technical highlights

• Pipe diameter: 3 inch 76.2 mm stainless steel, expertly TIG welded.
• Valve integration: retains OEM valve operation and mode switching.
• Supplied with required fittings and gaskets, excluding turbo clamp.

Fitment notes and legal information

• This full system removes the PPF also known as GPF or OPF.
• An ECU calibration is required at installation to prevent the engine management light EML.
• Fitment is for motorsport and off-road use only because the PPF is removed.
• De-cat version is sold for motorsport and off-road use only worldwide.
• Sports catalyst version replaces factory emissions devices and is not EC homologated. It may not meet emissions laws for road use in your region.

Compatibility

Designed for Audi S3 8Y Sportback 5 door models with the EA888 2.0 TSI TFSI engine and quattro drivetrain.

Our experience

We have installed this system on customer cars and in our own builds. Feedback has been consistently positive for quality, sound and drivability. The combination of larger-bore tubing and valve control delivers a noticeable step up in character without sacrificing day-to-day usability.

Professional installation

Want it fitted by specialists who know the S3 platform inside out? Book your installation with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and scheduling.

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