Audi RS3 TFSi - MIJ Exhaust Systems

🔧 Service Completed: Custom Back Box Delete Rear Section Upgrade

At MIJ Exhaust Ltd, we recently carried out a custom back box delete rear section upgrade on this Audi RS3, enhancing both the sound and rear-end appearance of this high-performance hot hatch.

For this build, we fabricated a bespoke rear section featuring a back box delete, allowing the iconic five-cylinder engine to produce a deeper, more aggressive exhaust note with increased presence under acceleration. The result is a sharper, more engaging soundtrack that perfectly suits the RS3’s performance, while remaining enjoyable for everyday driving.

To complete the transformation, the system was finished with a set of oval exhaust tips on both sides, giving the rear of the vehicle a clean, factory-inspired appearance with a more purposeful and premium finish.

As with all of our custom exhaust work, the entire rear section was fabricated and installed in-house using high-quality materials and precision craftsmanship, ensuring exceptional fitment, durability, and a professional finish throughout.

We’ve got a full video of the completed installation along with a sound demonstration, so you can see the finished system and hear exactly how this Audi RS3 now sounds.

Check out the video and let us know what you think of this Audi RS3 transformation.

https://www.instagram.com/p/DZKBMcLD5wc/?hl=en

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