Cat Replacement Milltek Audi RS3 8V 2.5 TFSI 400hp 2015-2018, TT 8S RS 2.5 TFSI 2016-2018 without DPF, Secondary Cat

Milltek Sport Decat Pipe for Audi RS3 8V / TT 8S RS

This Milltek Sport decat pipe for Audi RS3 8V / TT 8S RS replaces the catalytic converter with a free-flow stainless steel pipe, for maximum flow and a more aggressive sound.

Technical specifications

• Milltek part number: SSXAU588
• Part type: Decat pipe
• Details: Secondary cat replacement
• Tube diameter: 76.2 mm (3 in)
• Fitting information: Fitting with stock exhaust and Milltek system. Not required if a complete Milltek system is fitted. NOTE: not present on all models, visual check required before ordering.
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (United Kingdom)

Compatible vehicles

• Audi RS3 8V 2.5 TFSi 400 hp (Quattro, Sedan, 2017-2018, without DPF)
• Audi RS3 8V 2.5 TFSi (Phase 1, Quattro, Sportback, 2015-2017)
• Audi RS3 8V 2.5 TFSi 400 hp (Phase 2, Quattro, Sportback, 2017-2018, without DPF)
• Audi TT 8S RS 2.5 TFSi (Quattro, 2016-2018, without DPF)

Not sure about fitment for your vehicle? Contact us with your VIN before ordering.

Most frequently asked questions

• Is ECU tuning required? Yes. A suitable ECU map (Stage 2) is essential to get the full gain and avoid an engine warning light linked to the lambda sensors. It is the question buyers ask most, and the answer is always the same.
• And the contrôle technique? A decat downpipe does not pass the emissions test. This product is reserved for motorsport use.

Why choose Milltek Sport?

A benchmark among European tuners, Milltek Sport develops each of its systems directly on the vehicle. Mandrel bending, careful welds and aerospace-grade stainless steel ensure a system that lasts and sounds right.

Further reading

• Downpipe: decat or high-flow catalytic converter for your Stage 2?
• Exhaust system and contrôle technique in France

This product is intended exclusively for motorsport use, on closed circuits. Use on public roads is not permitted.