Valvetronic Designs
Valvetronic Audi B8 / B8.5 S4 / S5 Valved Sport Exhaust System
Valvetronic Audi B8 / B8.5 S4 / S5 Valved Sport Exhaust System
Couldn't load pickup availability
Audi B8 / B8.5 S4 & S5 Valved Exhaust System
T304 Stainless Steel, High-Pitch X-Pipe, Vacuum Valve Control
Overview
Transform your supercharged V6 into a true auditory experience.
Our Valvetronic Designs Valved Exhaust System for the Audi B8 and B8.5 S4/S5 delivers a unique, high-pitch wail while retaining low-end rawness for a sound profile unlike anything the platform has heard before.
Constructed entirely from T304 stainless steel and featuring our high-pitch X-pipe technology, this system runs 2.5 inches from front to rear, unlocking an exhilarating tone across the entire rev range. With integrated vacuum-actuated valves controlled via an included key fob remote, you have instant flexibility to switch from refined cruising to an aggressive, motorsport-inspired soundtrack.
Why It Works
-
High-Pitch X-Pipe Technology: Creates a sharper, more exotic tone while enhancing flow.
-
Vacuum Valve Control: Allows on-demand sound control from the included key fob remote.
-
Full Mandrel-Bent Design: Optimized flow for improved throttle response and power delivery.
Sound & Control
-
Valves Closed: Quiet enough for early morning starts and comfortable highway cruising.
-
Valves Open: Releases the full character of the supercharged V6 with both low-end depth and high-pitch excitement.
-
Remote Control: Operate valves instantly from the driver’s seat using the included key fob system.
Construction & Options
-
Material: T304 stainless steel for long-term durability and corrosion resistance.
-
Weight Savings: 12.3 lb lighter than the factory exhaust.
-
Craftsmanship: Precision TIG welds and mandrel bends for maximum flow and strength.
-
Diameter: 2.5" tubing from front to tips.
Fitment
-
2010–2016 Audi S4 (B8/B8.5)
-
2010–2016 Audi S5 (B8/B8.5)
Installation Notes
-
Direct OEM replacement—no permanent modifications required.
-
100% reversible—return to stock at any time.
What’s Included
-
T304 stainless steel valved exhaust system
-
Integrated high-pitch X-pipe
-
Vacuum-actuated valves with key fob control system
-
All necessary clamps and hardware
Specifications
-
Tubing Diameter: 2.5" from front to tips
-
Material: T304 stainless steel
-
Valves: Vacuum-actuated, remote controlled
-
Weight Savings: 12.3 lb lighter than OEM
🎧 Hear It in Action:
PLEASE EMAIL US AT: CUSTOMERSERVICE@VALVETRONIC.COM WITH ANY QUESTIONS
ECU tuning is the process of adjusting the engine control unit's software to enhance vehicle performance, efficiency, or fuel economy.
It can, depending on the manufacturer. Many warranties do not cover modifications like ECU tuning.
Use the highest octane fuel recommended for your specific tune to ensure optimal performance and safety.
Yes, a properly tuned car can be used daily, as long as the tune is tailored for reliable, everyday driving.
CPC (Central Powertrain Controller) and TCU (Transmission Control Unit) manage your vehicle's powertrain and transmission systems, respectively.
Map switching allows you to change between different tuning settings (maps) for varying driving conditions without having to retune the ECU.
Yes, if done by a professional using proper tools, ECU tuning is generally safe for your vehicle.
ECU tuning works by modifying the software that controls engine parameters like fuel mixture, ignition timing, and boost pressure to optimize performance.
The process of installing a tune depends on the vehicle’s make and model. Some tunes are installed by connecting a tuning device to your car’s OBD-II port and uploading the tuned software, others may require ECU unlock.
Stage 1 is for vehicles with no modifications, stage 2 is for vehicles with bolt-on upgrades or downpipes installed.
We offer post-installation support, troubleshooting, and guidance on using your tuning software and hardware.
Choose tuning software that is compatible with your vehicle, has good reviews, and suits your performance goals (e.g., reliability vs. max power).
