Service Completed: Custom Back Box Delete & Single Exit Exhaust Upgrade

At MIJ Exhaust Ltd, we recently completed a custom back box delete and single exit exhaust upgrade on a 2013 SEAT Leon FR Technology 1.4 TSI turbocharged petrol, giving the car a sportier rear-end appearance and a more distinctive exhaust finish.

For this build, the original rear back box was removed and replaced with a custom back box delete, finished in a single exit configuration to enhance the look of the Leon.

The setup was completed with twin staggered exhaust tips, adding a clean, sporty touch to the rear of the vehicle while creating a unique finish that complements the Leon FR’s styling.

As with all our custom exhaust work, the system was fabricated and fitted in-house, with careful attention to pipework, fitment and tip alignment to ensure a neat, quality finish.

Whether you’re looking for a back box delete, custom single exit exhaust, twin staggered exhaust tips, or a custom SEAT Leon exhaust upgrade, our team can design and fabricate a setup to suit your vehicle and preferred style.

We’ve also got a video of this build, showcasing the exhaust upgrade and the finished setup, so you can see the results and hear how the car sounds.
https://www.instagram.com/p/DdGXI0_E5Jz/

The gallery showcases this 2013 SEAT Leon FR Technology 1.4 TSI custom exhaust upgrade, featuring a back box delete, single exit configuration and twin staggered tailpipes.

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