Vorsprung V2 Test Pipes, Audi B8/B8.5 S4, S5, A6, A7, A8, Q5, SQ5 3.0T Supercharged
Vorsprung V2 Test Pipes, Audi B8/B8.5 S4, S5, A6, A7, A8, Q5, SQ5 3.0T Supercharged
V2 is here! Single mandrel bent 2.0mm 304 stainless piping, integrated dual layer heat shielding, TIG welded, and fully back-purged. Less welds + thicker pipes + heat shielding = unparalleled durability, zero rasp, and lower IATs. We beat the other guys, NO CAP (see what we did there?).
These are catless Audi S4 test pipes (also called race pipes, front pipes, or cat delete pipes) for the B8/B8.5 S4 3.0T supercharged. They replace the factory front catalytic converters between the exhaust manifolds and the downpipes, and bolt up to OEM or aftermarket 2.5" downpipes. The same pipes fit the S5, A4/A5 (B8.5, non-US), A6, A7, A8, Q5, and SQ5 with the 3.0 TFSI supercharged V6.
Built Right, Not Just Built: The Ultimate B8/B8.5 S4 Decat Solution
Most Audi S4 and 3.0T supercharged test pipes on the market cut corners with thin materials, weak welds, and inflated price tags. At Vorsprung Autowerk, we weren't impressed. So, we engineered the V2 Series: the most durable, reliable, and headache-free decat solution ever built for the Audi B8/B8.5 S4, S5, C7 A6, A7, D4 A8, and Q5/SQ5 platforms.
By combining the best features from every 3.0T test pipe on the market and removing the compromises, we've created a heavy-duty set that makes every other option look unnecessary. And we didn't slap an "Audi Tax" on it either.
Why Choose Vorsprung V2 Test Pipes for Your S4?
Our V2 design focuses on three core pillars: Durability, Sound Quality, and Heat Management.
- ✅ VORSPRUNG Spec 2.0mm Wall Thickness: While the industry norm is a thin 1.56mm, we use heavy-duty 2.0mm T304 stainless steel. Thicker walls mean maximum durability, significantly less "exhaust rasp," and superior heat retention for better exhaust velocity.
- ✅ True 2.5" Diameter: Full 2.5" tubing and flanges from manifold to downpipe, so there are no hidden choke points.
- ✅ Single Mandrel Bent Piping: One-piece mandrel bends eliminate unnecessary welds. Fewer failure points, unrestricted flow, and a stronger overall exhaust path.
- ✅ Integrated Dual-Layer Metal Heat Shielding: Standard on every V2 pipe, not a pricey add-on. Lower your Intake Air Temperatures (IATs) and protect surrounding engine bay components.
- ✅ TIG Welded & Back Purged: Back-purging keeps internal welds smooth and structurally sound to handle high-boost, dual-pulley, Stage 2+ applications.
- ✅ Reinforced 10mm Flanges: Internal and external reinforcement for a perfect OEM-style fit that will not warp or leak under extreme exhaust heat.
- ✅ Vibration Reduction: Reinforced mounting points keep the system rigid, reducing stress and fatigue on your factory manifold studs.
- ✅ Complete Kit: All hardware and gaskets included. Open the box, bolt them in.
Chasing a clean CEL-free setup? O2 spacers with Euro 6 coating are available here.
Audi S4 Test Pipe Technical Specifications
| Feature | Vorsprung V2 Spec | Industry Standard |
| Material | T304 Stainless Steel | T304 / T409 Stainless |
| Wall Thickness | 2.0mm (Heavy Duty) | 1.56mm - 1.65mm |
| Diameter | True 2.5" | 2.5" |
| Construction | Single Mandrel Bent | Multi-piece Welded |
| Welding | TIG Welded / Back Purged | Standard MIG/TIG |
| Heat Shielding | Included (Dual-Layer Metal) | Optional or None |
| Flange Thickness | 10mm Reinforced | 8mm Standard |
| Hardware & Gaskets | Included | Varies |
| Warranty | Lifetime | Varies |
Vehicle Fitment
Direct bolt-on fit for Audi 3.0 TFSI supercharged (EA837) platforms: the 2010–2016 Audi S4 (B8 and B8.5), 2010–2012 S5 Cabriolet (B8), 2013–2017 S5 Coupe, Sportback and Cabriolet (B8.5), B8.5 A4 and A5 3.0T (non-US markets), 2012–2018 A6 and A7 (C7/C7.5), 2011–2018 A8 (D4), 2013–2017 Q5 3.0T and 2014–2017 SQ5 (8R).
| Make | Model | Chassis | Years | Engine |
|---|---|---|---|---|
| Audi | S4 | B8 / B8.5 | 2010–2016 | 3.0T V6 Supercharged |
| Audi | S5 Cabriolet | B8 | 2010–2012 | 3.0T V6 Supercharged |
| Audi | S5 | B8.5 | 2013–2017 | 3.0T V6 Supercharged |
| Audi | A4 / A5 (non-US) | B8.5 | 2012–2016 | 3.0T V6 Supercharged |
| Audi | A6 | C7 / C7.5 | 2012–2018 | 3.0T V6 Supercharged |
| Audi | A7 | C7 / C7.5 | 2012–2018 | 3.0T V6 Supercharged |
| Audi | A8 | D4 | 2011–2018 | 3.0T V6 Supercharged |
| Audi | Q5 / SQ5 | 8R | 2013–2017 (SQ5 2014–2017) | 3.0T V6 Supercharged |
NOTE: Off-road / motorsport use only. Test pipes remove the catalytic converters entirely and are not designed to meet emissions standards. Does not fit C6 A6 or Q7 (4L). Have a 3.0T Audi Q7 (4M)? See our dedicated Q7 3.0T Test Pipes instead.
Engineered for Endurance, Guaranteed for Life
A lifetime warranty is only useful if you don't have to use it. Replacing test pipes on a 3.0T is a labor-intensive "subframe-drop" job, and the last thing you want is to do it twice.
That's why every set of Vorsprung Autowerk V2 test pipes carries a Lifetime Warranty. We're confident our 2.0mm, reinforced design will never leave you stranded or facing expensive re-installation labor.
Stop settling for thin pipes and weak welds. Upgrade to the Vorsprung V2, the last set of test pipes your Audi S4, S5, A6, A7, A8, or Q5 will ever need.
Audi S4 Test Pipes FAQ
Will these fit my Audi S4?
Yes. They're engineered specifically for the 2010–2016 B8 and B8.5 Audi S4 3.0T supercharged, plus the S5, A6, A7, A8, Q5, and SQ5 3.0T models listed in the fitment table above.
What's the difference between test pipes and downpipes on the 3.0T?
On the supercharged 3.0T, the catalytic converters sit in the front pipes right off the exhaust manifolds. Test pipes replace that front section and delete the cats. Downpipes are the next section back and connect to the mid-pipe. These test pipes bolt to OEM or aftermarket 2.5" downpipes.
Are test pipes street legal?
No. Test pipes remove the catalytic converters entirely and are intended for off-road, track, and motorsport use only. If you need to stay emissions-compliant, choose our High Flow Cats instead.
Do I need a tune after installing test pipes?
A tune that accounts for the decat is strongly recommended. It gets the most out of the added flow and handles catalyst monitoring. Check with your tuner for the correct file.
Will removing the cats trigger a check engine light?
Removing the catalysts can trigger catalyst-efficiency codes on some ECUs. Pairing with Euro 6 O2 spacers (linked above) or a tune that accounts for the change can help. Check with your tuner.
What's included?
Driver and passenger side test pipes with integrated dual-layer heat shielding, plus all required hardware and gaskets.
Test pipes or High Flow Cats?
Test pipes are fully catless for maximum flow and track use. The High Flow Cats keep catalytic converters in place while still improving on the restrictive factory units. Choose based on how your car needs to be driven and registered.
Why Buy From Us?
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✅Enthusiast Designed & Tested: Developed by people who actually drive and modify these cars.
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✅Tested on Our Own Cars: If we wouldn't run it ourselves, we don't sell it.
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✅Continuous R&D: We continually develop and improve our products instead of relying on generic catalog parts.
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✅Supporting Audi Platform Development: Your purchase helps fund continued development of new parts for these chassis.
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✅Real Enthusiast Support: Get help from people who understand the platform, not ticket bots.
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✅Small Team, Big Passion: Every order directly supports continued product development and innovation.
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✅Performance Without the Marketing Fluff: Purpose-built parts designed to perform.
Complete Your S4 Exhaust Build
Test pipes are frequently paired with:
- HEH Headers V2 for Audi 3.0T
- Euro 6 O2 Spacers
- High Flow Cats, if you'd rather keep catalytic converters than run fully catless.
- Ported Supercharger Service
Drive the difference. Drive Vorsprung.