FI Exhaust Valvetronic Cat-Back System For Audi S4 / S5 (B9) 2018-2024

Audi B9 S5 (Non Sport Diff Vehicles Only) Fi Exhaust (Frequency Intelligent Exhaust) high-performance valvetronic exhaust system is direct replacement bolt on system manufactured out of a high-grade T304 stainless steel that offers an exhilarating soundtrack.

The Fi EXHAUST system is designed with a valvetronic technology to control airflow, sound volume and enhance the overall performance and torque. On average horsepower is expected to increase from 5-10% after installing a full catless system, which includes a valvetronic catback and ultra-high flow downpipe.

When valves are closed exhaust gasses are routed through the muffler resulting in a low-profile comfortable drive. However, when the valves are fully open an intense and sporty soundtrack is produced.

Switching between street and race sound profiles can be done using factory exhaust/sport button or drive mode, or optional Fi EXHAUST remote control and mobile App.

The unique sound and performance for Audi B9 S5 is achieved through individually designed muffler internals that are fabricated to offer an ultimate driving experience.

Please note each part of the Fi EXHAUST system needs to be ordered separately.
Different exhaust parts are offered depending on the vehicle version.

Please note that the actual product may vary in appearance depending on the year of the car and area. The exhaust system is also subject to changes to the design over an extended time period. Product pictures are for illustration purposes only.

Exhaust is compatible only with Audi S5 B9 Non Sport Differential vehicles. Otherwise, adjustments to the exhaust are required.

If items are on back order once the order has processed, buyers will receive an email regarding estimated time of arrival, 6-8 weeks is industry standard. Delivery time is subject to change. Valve Control Exhaust will not be held liable for any delays. All back order cancellations are subject to a 50% non-refundable deposit. Please be aware of this before ordering. If you have any questions, please contact us at info@valvecontrolexhaust.com