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Description
ARM Motorsports AUDI A4 B8 3" TEST PIPEHIGHLIGHTS Gain up to +24whp 30wtq Faster Turbo Spool Improved Exhaust Note Better Throttle Response 3" Design Precise Fitment PROFILE This A4 test pipe is a powerful and easy bolt on alternative to a full downpipe exhaust upgrade. The ARM Test Pipe replaces the section of the OEM exhaust that is the most restrictive on the 2. 0T, which is bolted directly onto the turbocharger housing. The OEM section of the exhaust is equipped with a catalytic
HIGHLIGHTS
• Gain up to +24whp / 30wtq
• Faster Turbo Spool
• Improved Exhaust Note
• Better Throttle Response
• Faster Turbo Spool
• Improved Exhaust Note
• Better Throttle Response
• 3" Design
• Precise Fitment
PROFILE
This A4 test pipe is a powerful and easy bolt-on alternative to a full downpipe exhaust upgrade. The ARM Test Pipe replaces the section of the OEM exhaust that is the most restrictive on the 2.0T, which is bolted directly onto the turbocharger housing. The OEM section of the exhaust is equipped with a catalytic converter from the factory, and by installing this upgraded catless exhaust section, your A4 will allow more airflow and decrease back-pressure, which can produce up to +24whp and +30wtq on tuned cars.
The improved power and torque is most noticeable lower in the rpm range where the stock system stifles exhaust flow. After installing the Test Pipe you will also experience increased throttle response and improved turbo spool because the faster flowing exhaust will spin the turbocharger quicker, which will result in hitting target boost levels faster. The result: faster acceleration, quicker 0-60mph and 1/4 mile times.
The improved power and torque is most noticeable lower in the rpm range where the stock system stifles exhaust flow. After installing the Test Pipe you will also experience increased throttle response and improved turbo spool because the faster flowing exhaust will spin the turbocharger quicker, which will result in hitting target boost levels faster. The result: faster acceleration, quicker 0-60mph and 1/4 mile times.
The ARM Test Pipe will also greatly improve the sound of the exhaust, even with the rest of the system in stock form. It's stunning to see how much the OEM exhaust not only kills power but also sound. After upgrading to an ARM Test pipe expect a deeper and more aggressive sound on your A4 2.0T.
CONSTRUCTION
The ARM Test Pipe is constructed of 3" Stainless Steel for high-flowing performance and longevity. Included are two O2 bungs where the factory O2 sensors can be reinstalled or blocked off with the two included bolts.If you are installing the ARM Test Pipe on a stock or stage 1 ECU tune, this now opens the doors to run advanced boost settings. With the high flowing 3" Test Pipe the 2.0T engine can now handle increased exhaust flow from higher boost targets.
If you run this system without an ECU tune or O2 sensor fix, expect to get a check engine light. This can be resolved by installing an upgraded ECU programmer or using an O2 sensor fix adapter.
IN THE BOX
• ARM 3" Catless Downpipe
• Hardware & Gasket Kit
• Hardware & Gasket Kit
FITMENT GUIDE
| Make | Model | Submodel | Engine |
|---|---|---|---|
| Audi | B8 A4 | FWD | 2.0T |
| Audi | B8 A4 | Quattro | 2.0T |
| Audi | B8 A5 | Quattro | 2.0T |
| Audi | B8 Allroad | Quattro | 2.0T |
ARM MOTORSPORTS LIFETIME WARRANTY
Every ARM Motorsports product is backed by a lifetime warranty which is automatically issued at the time of purchase. Your warranty protects you against any defects in craftsmanship or fitment. The warranty entitles you to a replacement unit.
This product is for Off-Road Use Only. Items sold for off-road use only are illegal to use on public roads in most states and provinces. This product is intended for racing vehicles which may never be used on a public road.
This product is for Off-Road Use Only. Items sold for off-road use only are illegal to use on public roads in most states and provinces. This product is intended for racing vehicles which may never be used on a public road.
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
4.6 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
Outlasts stuffed dog toys
Size: Large/Giant (1 Count)
This chew toy is still in one piece. I can’t say that about a number of other chew toys I’ve gotten for my 6 month old black lab. It does make a lot of noise when it is forcefully dropped on my wood floor, which my dog seems to get great entertainment from. I would be concerned about that activity if I had tile floors. I plan to buy more of these toys. It’s holding up and the strange shape makes it a little easier to find when it’s been kicked under a piece of furniture.
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Reviewed in the United States on August 17, 2025
★★★★★ 5
Bones
Size: Large/Giant (1 Count)
All three of my yorkies luv these
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
★★★★★ 5
8 Paws up
Size: Large/Giant (1 Count)
I bought one of these several months ago for my 6 year old, 65 lb Am Staff mix. He’s a super chewer; for example, he once chewed the corner off a windowsill before I caught him. He loves this. Just adopted a 4 year old, 55 lb female Am Staff mix. Equally super at chewing. I had her with me in my home office and she randomly bit a chunk off the decorative trim on my old wood desk. Anyway, as soon as she saw this toy, she made a beeline for it. Thank goodness I had a spare! I’m now here to buy a third, because this is a good one for dogs who can REALLY chew.
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Reviewed in the United States on December 15, 2024
★★★★★ 3
Dogs not interested
Size: Large/Giant (1 Count)
My two labs do not care for this one.
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Reviewed in the United States on October 29, 2023
★★★★★ 5
LOVE BARK TOYS!!!
Color: Rad Herring - Medium
I got this toy for my 1yr old Husky/Heeler/(possibly)GSD (approx 42lbs) mix when she came to our home mid/late October of 2025 and the toy lasted until December 3rd 2025 when we had to assist her with opening the fabric to get the toy on the inside.
It was a great fun toy for her and the inside toys still is and she loves playing with it. The durability of both the outside and inside toys are great for super chewers! I was glad there was no stuffing because I had gotten her a plush toy once before and she destroyed that immediately. The fabric on this was durable enough to withstand her chewing yet soft enough that it didn’t hurt her teeth. The colors were vibrant and fun for both toys even though wear and tear kinda took some of the fabric color away. I would definitely buy this again once the inside toy is no longer safe for her, especially since the size was perfect for her too.
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Reviewed in the United States on January 12, 2026