Mercedes E400 AMG 2014 - MIJ Exhaust Systems

Service Completed: Custom Quad Exit Back Box Delete Exhaust Upgrade

At MIJ Exhaust Ltd, we recently completed a custom back box delete and quad exit exhaust conversion for a 2014 Mercedes-Benz E400 AMG Sport Plus 3.0 Petrol, giving the vehicle a more commanding presence and an exhaust note that better reflects the performance of its twin-turbo V6 engine.

For this project, we carried out our back box delete service, fabricating a bespoke rear section designed to deliver a deeper, sportier exhaust tone while retaining excellent drivability for everyday use. Every exhaust is tailored to the individual vehicle, ensuring the finished sound suits both the engine and the customer’s preferences.

To complete the transformation, we converted the rear of the vehicle to a quad exit exhaust configuration, finished with twin exhaust tips on both the left and right-hand sides. The result is a clean OEM+ appearance that perfectly complements the styling of the E-Class AMG Sport Plus, giving the rear of the vehicle a far more aggressive and premium finish.

Manufactured entirely in-house using premium-grade stainless steel and precision fabrication techniques, the exhaust system offers exceptional fitment, durability, and craftsmanship. Every weld and component is carefully finished by our experienced team to ensure the highest standards of quality.

Whether you’re looking for a back box delete, quad exit exhaust conversion, custom rear section, or a bespoke stainless steel exhaust system, MIJ Exhaust Ltd manufactures every exhaust to suit your vehicle and your desired sound.

The gallery above showcases this Mercedes E400 AMG Sport Plus custom quad exit exhaust conversion. To hear the upgraded exhaust note and see the finished system in action, simply click the video link below.
[Video coming soon]

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