Large Downpipe Milltek Audi TT 8N 1.8T 180-225hp 1998-2006 - with High-Flow Cat

Downpipe with high-flow catalytic converter by Milltek Sport for Audi TT 8N

This Milltek Sport downpipe with high-flow catalytic converter for the Audi TT 8N opens up the exhaust right after the turbo while keeping a high-flow sport catalytic converter: the best compromise between performance and emissions control.

Technical specifications

• Milltek part number: SSXAU431
• Part type: Downpipe with high-flow catalytic converter
• Detail: Large diameter downpipe and high-flow sport catalytic converter
• Tube diameter: 76.2 mm (3 inches)
• Fitment information: For Milltek Race 76mm line only - TT 225 Quattro fitment only - ECU remap
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• Audi TT 8N 1.8T 180-225 hp (Quattro, Coupe and Roadster, 1998-2006)

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

Frequently asked questions

• Is an ECU remap required? Yes. A suitable ECU map (Stage 2) is essential to get the full gain and avoid a check engine light linked to the lambda sensors. It is the question buyers ask most, and the answer is always the same.
• 200-cell high-flow catalytic converter: it keeps real emissions control while flowing considerably more than the original. It is the choice of tuners who want to keep their vehicles clean.
• Line compatibility: this downpipe is designed to connect to a Milltek exhaust line. Check the correct version if you keep the original exhaust line.

Why choose Milltek Sport?

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

Going further

• Downpipe: decat or high-flow cat for your Stage 2?