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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22
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Description
Audi S4/S5 3.0T B9 Fi Original Exhaust SystemAudi 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
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.
Catback Exhaust:
Front Pipe + Mid X-Pipe + Valvetronic Muffler + Quad Silver Tips + Standard remote control system module (AD-S4B9-CBV + TIP6389S*4 + R2016OL + OBD-CAB-V)
Downpipes (Optional):
1.Ultra High Flow DownPipe (AD-S4B9-NCAT)
2.Sport 200 cell DownPipe (AD-S4B9-CAT200)
Tips (Optional):
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)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
It lasted over a week- amazing for the fogzilla!
Size: Large, Color: Monkey - Green
There is no dog toy that can survive big puppies with strong jaws and sharp teeth, but the squeaker lasted a week and the arms/ legs are still intact. She's still playing with it, so I'm impressed.
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Reviewed in the United States on June 6, 2026
★★★★★ 1
Dye comes off. Stained hands and dog fur.
Size: Large, Color: Octopus - Multi Color, Size: Large, Color: Octopus - Multi Color
Literally dyed my hand and my dogs fur blue from the paint coming off immediately after opening the box. I have washed my hand multiple times and it’s still this color. I have given up on my dog’s fur. I’m assuming whatever it was wasn’t great for her to digest.
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Not chew proof but great for stimulating your dog!
Size: Large, Color: Octopus - Multi Color, Size: Large, Color: Octopus - Multi Color
8 legs gone in one night! Haha to be expected because my dog is a heavy chewer. Like other costumers we are left with a blue ball which she still plays with. It’s a great toy for days that my dog really needs to get energy out. She was so tired after, she was panting like she ran for miles. I suggest combining physical exercise with things like purposeful chewing or licking toys to tired them out. Doing this has reduced my dog’s anxiety tremendously over the years therefore reducing destruction of our furniture 😅 a tired pup is a happy pup!
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Reviewed in the United States on June 11, 2026
★★★★★ 3
It’s not for a big dog with large teeth
Size: Large, Color: Rabbit
The dogs Already chew its nose off
Didn’t last 2 days. We are trying to sew it up. It will probably end up in the trash
Thought this bunny is very cute. I’d only buy it for children to play with it. Or maybe a tiny dog.
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Reviewed in the United States on May 18, 2026
★★★★★ 1
Not durable at all
Size: Medium
Come apart easily . Very dangerous for pets.
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Reviewed in the United States on February 6, 2026