FI Exhaust - Audi A4 / A5 2.0T FWD (B9) 2017+ Valvetronic Exhaust
 
Audi B9 A4 Sedan / Avant 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 A4 Sedan / Avant is achieved through individually designed muffler internals that are fabricated to offer an ultimate driving experience.