CTS Turbo 8V/8Y RS3 and 8S TTRS 2.5T EVO 3.5″ Single High-flow Cat

The CTS Turbo EVO 3.5-inch single high-flow catalytic converter is purpose-built for Audi RS3 8V and 8Y, plus TTRS 8S platforms with the 2.5-litre turbocharged five-cylinder engine. This oversized cat replaces the restrictive factory unit, significantly improving exhaust flow while retaining emissions control. The mandrel-bent design and high-cell-count metallic substrate work together to minimise turbulence and heat buildup. Ideal for tuned applications where maintaining catalyst function is required, this component integrates seamlessly with factory or aftermarket exhaust systems to unlock additional performance potential.