CTS Turbo B8/B8.5 Audi A4/A5/AllRoad/Q5 1.8T/2.0T High Flow Catalytic Converter

The CTS Turbo high flow catalytic converter is engineered specifically for B8 and B8.5 generation Audi A4, A5, AllRoad and Q5 models equipped with 1.8 or 2.0-litre turbocharged engines. This performance upgrade replaces the restrictive factory catalyst with a larger-core metallic substrate that significantly reduces exhaust backpressure whilst maintaining emissions compliance. Ideal for vehicles running ECU tuning or supporting modified turbo systems, the CTS design integrates seamlessly with factory exhaust flanges and oxygen sensor bungs. Improved flow characteristics allow turbocharged engines to operate more efficiently under load, making this catalytic converter a practical choice for workshops building comprehensive performance packages.