Vorsprung Autowerk TruFlow UltraTone Catted and Resonated Downpipes V2, Audi B8/B8.5 Audi S4, S5, A6 3.0T Supercharged

TruFlow UltraTone Catted and Resonated Downpipes - Pre-order!

Important: Unfortunately we have had a delay in delivery. We have tested these with the newly released crackle tunes from both 034 and Jackal and are seeking a packing material that will have greater long term durability. This issue is not unique to our downpipes, but we want to make sure we have the absolute best outcome for our customers. 

You may have seen our prototype on social media. Sounded good right? Well it had some flaws. We fixed them. It's now stronger, has sleeve clamps for easier install, and it's heat shielded so your toes are a little less toasty.

Does it look weird? Yes, that's because no one else has developed a downpipe quite like this. Baffles are restrictive and resonators alone aren't enough. Why TruFlow? Because it flows and sounds better.

Engineered for drivers who demand both performance and refinement, the Tru Flow UltraTone downpipe combines cutting-edge flow technology with an unmistakably deep, sophisticated exhaust note.

At its heart, UltraTone features high-performance 400 cell metallic catalytic converters, precision-built to withstand exhaust gas temperatures well beyond the peak ranges typical of modern Audi powerplants. This ensures consistent performance and durability, even under the harshest driving conditions.

To optimize sensor integration and maintain seamless ECU compatibility, secondary O₂ bungs have been strategically relocated—simplifying installation and improving fitment on a wide range of models (catalyst readiness results may vary).

Complementing the catalytic system, UltraTone incorporates large straight-through resonators specifically designed to reduce cabin drone while sculpting a rich, low-frequency tone. The result is a uniquely deep, refined soundtrack that stays civil under cruise yet roars to life under load.

True to its name, Tru Flow UltraTone delivers uncompromising flow, thermal resilience, and sound quality—crafted for enthusiasts who refuse to settle.

Why Buy From Us?

✅ Enthusiast-designed & tested — Built by people who actually drive
✅ Run on our own cars — If we don’t trust it, we don’t sell it
✅ Always improving — Continuous R&D, not cookie-cutter catalog parts
✅ We support platform development — Investing in the future of your chassis
✅ Real support from real humans — Talk to enthusiasts, not ticket bots
✅ Small team, big passion — Every order helps fuel innovation
✅ No marketing fluff — Just honest parts that perform