High-Flow Cat

The CTS Turbo High-Flow Cat is engineered to significantly improve exhaust flow and unlock the performance potential of your 2018+ B9 Audi SQ5 with the 3.0T engine. This component replaces the restrictive factory catalytic converter, allowing for greater power gains and a more aggressive exhaust note. Crafted from premium CAST T304 stainless steel, this high-flow cat features hand TIG welding and back-purging, ensuring a robust construction built for years of reliable performance. Its design, developed with advanced CAD technology, guarantees a precise fitment, seamlessly integrating into your existing exhaust system in place of the stock catalytic converter. The unit incorporates a 200-cell sport catalytic converter, balancing performance enhancement with emissions considerations for competition use. Beyond power, the CTS Turbo High-Flow Cat significantly enhances the auditory experience of your SQ5. It delivers a sporty growl with a more pronounced exhaust "crackle" during downshifts and a confident "braappp!" sound when shifting gears, especially when paired with an aftermarket exhaust system. Even when used with the factory exhaust, it provides a subtle yet sporty tone without introducing drone during cruising. This product is explicitly sold for competition use and is not street legal. To prevent a Check Engine Light (CEL) after installation, proper Stage 2 tuning software is required. Installation hardware is included for a more straightforward integration.