Vauxhall Astra GTC SRi

This Astra GTC came into MIJ Exhaust for a full DPF-back system upgrade, including a cat-back mid and rear section, designed to improve flow, sharpen response, and enhance the overall driving experience. We fabricated and fitted a stainless steel system tailored specifically to the GTC’s chassis for perfect fitment and OEM+ finish.

The new setup reduces restriction from the factory system, allowing the engine to breathe more freely and delivering a crisper, more engaging exhaust note -refined in everyday driving, but noticeably more responsive when pushed.

We’ve included before and after photos to show the transformation, from the restrictive factory layout to the new performance-focused stainless steel system.

The result?
Improved exhaust flow through full DPF back system
Sharper throttle response and more responsive feel
Enhanced, sportier exhaust tone without being excessive
Clean stainless steel finish with precise, custom fitment

Click the link below to our socials to hear the sound test:
https://www.instagram.com/p/DVQb2J7DoJs/

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