Audi TT RS (MK3) (10-14) 2.5 TFSI Secondary De-Cat Bypass Performance Exhaust

Unlock the soundtrack and flow your five-cylinder deserves with this Cobra Sport secondary cat delete pipe for the Audi TT RS 2.5 TFSI. If you are chasing a harder-edged exhaust note, faster turbo spool and reduced back pressure for track days and off-road use, this catless mid-section is the proven, value-packed upgrade. Built to deliver an aggressive tone without the primary catalyst in the way, it replaces the secondary catalytic converter with precision 63.5 mm pipework for cleaner, freer breathing.

We have fitted this upgrade for customers who wanted a sharper, more motorsport-led character. Feedback is consistently positive about the crisper response, deeper acoustics and enhanced drama under load. It is an excellent foundation for future tuning and pairs brilliantly with software and intake mods.

Why choose this secondary cat delete for your TT RS

• Flow-optimised 2.5 inch 63.5 mm pipework for improved exhaust gas velocity
• Replaces the secondary catalyst to reduce restriction and enhance turbo response
• Catless mid-pipe design delivers a louder, more engaging soundtrack
• Direct replacement section designed for straightforward installation
• All required gaskets and fittings are included
• Fully guaranteed by Cobra Sport for quality and fit

Search-friendly terms our customers use

Audi TT RS 2.5 TFSI secondary cat delete, decat mid-pipe, cat bypass pipe, straight pipe section, catless exhaust section, mid-section delete, track exhaust upgrade, turbo-back prep, secondary catalyst removal, exhaust mod for TT RS, performance exhaust pipe, 2.5 inch 63.5 mm pipework, sound upgrade for TT RS.

Fitment and compatibility

Designed for the Audi TT RS 2.5 TFSI five-cylinder. It replaces the secondary catalytic converter section. For the best results and a seamless install, book professional fitting.

Professional installation

Prefer expert fitting and alignment for your exhaust upgrade? MJ Modifications in Warwickshire can help. Email info@mjmodifications.co.uk for a fitting quote and scheduling.

Important information

• Sold for motorsport and off-road use only worldwide. Check local regulations before purchase.
• Removing the standard catalyst can activate a check engine light. An ECU remap is recommended to stabilise power delivery and clear EML warnings.

What’s in the box

• Cobra Sport secondary catalyst delete section
• All relevant fittings and gaskets

Media

Example of the Audi RS3 8V and TT RS performance exhausts using secondary catalyst delete pipes.