Audi A3 TFSi S Line - MIJ Exhaust Systems

Service Completed: Custom Valved Rear Section Upgrade

At MIJ Exhaust Ltd, we recently completed a custom valved rear section upgrade on this 2017 Audi A3 TFSI S Line 2.0 Turbo Petrol, giving the car the perfect balance of everyday refinement and performance-focused sound.

For this build, we fabricated and installed a custom valved rear section, allowing the driver to switch between a quieter, more refined exhaust note and a deeper, sportier tone at the touch of a button. With the valves open, the 2.0 turbocharged petrol engine produces a richer, more aggressive sound, while closing the valves keeps the exhaust comfortable for daily driving.

The upgraded system not only enhances the driving experience but also retains a clean OEM+ appearance that perfectly complements the Audi A3 S Line’s sporty styling.

As with all of our custom exhaust systems, the entire setup was fabricated and installed in-house using high-quality materials and precision craftsmanship, ensuring excellent fitment, long-lasting durability, and a professional finish.

We’ve also recorded a full sound test video so you can hear exactly how this Audi A3 TFSI S Line sounds with its new custom valved rear section.

Check out the video and let us know what you think of this Audi transformation.
https://www.instagram.com/p/DaXlonPAXeQ/

Why Choose a Custom MIJ Exhaust?

No two vehicles—and no two customers—are alike. That’s why every exhaust system we build is custom-made on the vehicle for the perfect fit, tone, and performance.

Whether you’re after:

A sportier, more aggressive sound,

A performance-focused setup, or

A refined, OEM-style tone,

—we tailor the design specifically to your goals.

More Than Just Custom Builds

We provide all types of exhaust services, including:

Exhaust repairs and leak fixes

Section replacements

Welding cracks and fault correction

Tailpipe upgrades and cosmetic enhancements

Small adjustments and one-off jobs