Audi A4/A5 2.0T FWD (B9) | 2017+ Fi Exhaust System

Audi A4/A5 2.0T FWD (B9) | 2017+ Fi Exhaust SystemAudi 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

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.

Depending on your car model and exhaust setup, switching exhaust valves between street and race modes may be achieved using a factory exhaust/sport button, drive modes, or by selecting the Fi Pro remote control upgrade. Please note that not all options are available for every model. Refer to the available section and contact our representative for confirmation.

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.

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.


※ Dual tips option is available for the exhaust.

Catback Exhaust Dual Version:
Front Pipe + Mid Y-Pipe + Valvetronic Muffler + Dual Silver Tips+Standard remote control system module (AD-A4B9-CBV + TIP63101S*2+R2016OL + OBD-CAB-V)

Catback Exhaust Quad Version:
Front Pipe + Mid Y-Pipe + Valvetronic Muffler + Quad Silver Tips + Standard remote control system module(AD-A4B9Q-CBV + TIP6389S*4 + R2016OL + OBD-CAB-V)

Downpipes (Optional):
Dual/Quad Version
1.Ultra High Flow DownPipe (AD-A4B9-NCAT)
2.Sport 200 cell DownPipe (AD-A4B9-CAT200)

Tips (Optional):
Dual Version
1.Dual Tips in Titanium Blue (TIP63101TB*2)
2.Dual Tips in Diamond Black (TIP63101B*2)
3.Dual Tips in Gold (TIP63101G*2)
4.Dual Tips with Carbon Fiber (TIP63101C*2)

Quad Version:
1.Quad Tips in Titanium Blue (TIP6389TB*4)
2.Quad Tips in Diamond Black (TIP6389B*4)
3.Quad Tips in Gold (TIP6389G*4)
4.Quad Tips with Carbon Fiber (TIP6389C*4)

Fi EXHAUST Pro Remote Control System (Optional):
OBD2/Mobile APP Remote Control System Module (R2020OBD)