BMW 320D 2015

Service Completed: Back Box Delete with Twin Carbon Fibre Effect Exhaust Tips

At MIJ Exhaust Ltd, we recently carried out a custom back box delete on this 2015 BMW 320d M Sport 2.0L Diesel, giving the vehicle a sportier rear-end appearance and a more purposeful exhaust note.

For this build, we removed the factory rear silencer and replaced it with a custom straight-through rear section, allowing the exhaust gases to flow more freely while enhancing the overall character of the vehicle. A back box delete is a popular modification for drivers looking to improve both the sound and appearance of their car without replacing the entire exhaust system.

To complete the transformation, we fitted a pair of twin carbon fibre effect exhaust tips. These premium-style tips add a modern performance-inspired finish to the rear of the BMW, complementing the M Sport styling and giving the vehicle a more aggressive and refined appearance. The carbon fibre effect detailing contrasts beautifully with the bodywork and provides a distinctive finishing touch.

The completed setup delivers a deeper and more noticeable exhaust tone compared to the standard system, helping to give the 320d a more engaging presence on the road while maintaining everyday usability. Combined with the upgraded tailpipes, the modification significantly improves the vehicle’s rear-end aesthetics.

At MIJ Exhaust Ltd, we specialise in custom stainless steel exhaust fabrication and always tailor our work to suit the customer’s goals. Often, a targeted modification such as a back box delete can achieve exactly the desired result without the expense of a full exhaust replacement. Our approach is simple: provide honest advice, carry out only the work that’s needed, and deliver a high-quality finish every time.

All fabrication and installation work was completed in-house by our experienced team, ensuring precise fitment, excellent durability, and a professional finish throughout.

Be sure to check out the before image to see how the vehicle looked prior to the modification, and watch the accompanying sound test video to hear the difference and see the completed twin carbon fibre effect tip conversion in action.
https://www.instagram.com/p/DY3_k6_iROg/

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