High-Flow Catalytic Converters Milltek Audi RS4 B7 4.2 FSI V8 420 hp 2006-2008 - Pair of HiFlow 200 Race 200 CPSI Catalytic Conv

Milltek Sport Hi-Flow high-flow catalytic converter for Audi RS4 B7

This Milltek Sport Hi-Flow high-flow catalytic converter for Audi RS4 B7 replaces the original catalytic converter with a high-flow unit, for better gas flow while keeping emissions control.

Technical specifications

• Milltek part number: SSXAU115
• Part type: High-flow catalytic converter
• Details: Pair of HiFlow 200 Race 200 CPSI catalytic converters
• Tube diameter: 63.5 mm
• Installation notes: Milltek line fitment, ECU remap
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• Audi RS4 B7 4.2 FSI V8 420 hp (Quattro, Sedan - Wagon - Cabriolet, 2006-2008)

Not sure it fits your vehicle? Contact us with your VIN (chassis number) before ordering.

Most 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 often, and the answer is always the same.
• Line compatibility: this downpipe is designed to connect to a Milltek exhaust system. Check the correct version if you keep the original exhaust.

Why choose Milltek Sport?

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

Further reading

• Downpipe: decat pipe or high-flow catalytic converter for your Stage 2?