CTS TURBO B9 AUDI A4/A5/ALLROAD HIGH FLOW CAT

CTS Turbo's high flow catalytic converter is engineered specifically for B9 platform Audi A4, A5 and Allroad models from 2017 to 2020. This performance-oriented cat replaces the restrictive factory unit to significantly reduce exhaust backpressure while maintaining emissions compliance. The improved flow characteristics support tuned engines by allowing spent gases to exit more efficiently, which is particularly beneficial when paired with ECU remapping or other performance upgrades. Built to CTS Turbo's exacting standards, this catalytic converter offers a direct bolt-in solution for workshops seeking measurable improvements in exhaust system efficiency without compromising reliability.