Service Completed: Custom Dual-Exit Cat-Back Exhaust System

At MIJ Exhaust Ltd, we recently completed a custom dual-exit cat-back exhaust system for a 2017 SEAT Leon FR TSI Technology 1.8 Petrol, delivering improved exhaust flow, a sportier exhaust note, and a more aggressive rear-end appearance.

For this build, we fabricated a bespoke cat-back exhaust system, replacing the factory exhaust from the catalytic converter backwards. The new system features a dual-exit rear section, giving the Leon FR a more balanced and performance-inspired look while enhancing the character of the 1.8 TSI engine.

Every cat-back exhaust we manufacture is designed specifically for the individual vehicle, ensuring excellent fitment and the ideal balance between performance, sound, and everyday drivability. Using premium-grade materials and precision fabrication techniques, our experienced team produced a system that delivers a deeper, more refined exhaust tone without compromising comfort.

As with all of our custom exhaust systems, the entire exhaust was fabricated and installed in-house, ensuring exceptional craftsmanship, durability, and attention to detail from start to finish.

The gallery below showcases this SEAT Leon FR 1.8 TSI custom cat-back exhaust system, and we’ve also included a sound test video so you can hear the enhanced exhaust note and experience the difference our bespoke exhaust systems can make.
https://www.instagram.com/p/DZwUY0TChR4/

 

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

    • No job is too small.

     

    Want to Know How We Build Your System?

    Learn more about our process on our Exhaust Construction page: https://www.mijexhaust.com/exhaust-construction/

     

    Get Your Personalised Quote

    Use the enquiry form on the side of this page, and our team will get back to you with a tailored estimate.

     

    See More of Our Work

    Check out our social channels for videos, sound clips, and behind-the-scenes content:

    Instagram: https://www.instagram.com/mijperformanceexhaust/
    Facebook: https://www.facebook.com/MIJPerformanceExhausts
    YouTube: https://www.youtube.com/@MIJPERFORMANCEcom/shorts
    TikTok: https://www.tiktok.com/@mij_performance