TNEER Valvetronic Exhaust System for Audi RS5 (B9) 2018-2020
(Fits- Audi RS5 (B9) 2018-2020)
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TNEER Valvetronic Exhaust System for Audi RS5 (B9) 2018-2020
The Audi RS5 B9 is built around a 2.9-litre twin-turbocharged V6 producing 450 horsepower, the EA839 engine developed through a joint engineering program between Audi and Porsche and representing one of the most accomplished compact forced-induction V6 configurations in current production. The RS5's availability in both Coupe and Sportback body configurations presents specific underbody packaging differences within the shared MLB Evo platform, with each body structure creating distinct exhaust routing constraints through the underbody. The twin-turbocharged V6's compact displacement and high specific output make exhaust system design particularly consequential on this platform, where back pressure management and mid-system flow geometry have a direct effect on how the EA839 delivers its performance characteristics across the rev range. TNEER engineers this valvetronic system specifically for the RS5 B9, with mid pipe routing and mounting geometry developed to the exact chassis layout shared across both Coupe and Sportback configurations.
Each section is formed from single-piece high-grade stainless-steel tubing using robotic pipe bending technology, producing continuous tube geometry throughout the system without the weld joints and flow disruptions of multi-segment construction. The mid pipe addresses the exhaust path between the turbocharger outlets and the valvetronic rear muffler section, establishing the flow characteristics and back pressure profile that define the system's performance contribution through the mid-system. The system installs to all factory mounting locations across both the Coupe and Sportback body configurations, requiring no structural modification and maintaining correct chassis alignment throughout. The dual silver tips complete the system at the rear fascia, providing a clean, high polish finish consistent with the RS5's performance aesthetic across both body styles.
The ECU-controlled valvetronic rear mufflers manage acoustic output through the RS5's existing drive mode architecture without secondary controllers or aftermarket modules. Valves closed, the system maintains a composed tone appropriate for daily and road use while presenting more of the twin-turbocharged V6's character than the factory exhaust allows at any throttle position. Valves open, the full acoustic output of the EA839's twin-turbocharged V6 is unobstructed and responds directly to throttle input and engine speed. The RS5's V6 has a distinct acoustic character at full throttle that is specific to the twin-turbocharged six-cylinder configuration and the EA839's particular state of tune. This system presents that character without the attenuation the factory exhaust imposes on every drive.
Optional Downpipe Configurations
For owners who want to address the primary restriction point in the exhaust path, TNEER offers two downpipe specifications that deliver meaningful performance and acoustic improvement beyond what the mid pipe and valvetronic muffler system alone provides.
- The race downpipes remove the factory catalytic converters immediately downstream of the turbocharger outlets, where back pressure reduction has the most direct effect on turbine behavior, spool characteristics, and mid-range torque delivery. On the EA839's twin-turbocharged V6, the relationship between downstream restriction and turbocharger efficiency is immediate and measurable at every point in the rev range. These components are intended for closed course and off-road use.
- The 200-cell sport downpipes retain a high-flow catalytic substrate in place of the factory units, reducing restriction significantly while maintaining a level of emissions compliance appropriate for street-driven builds. For RS5 B9 owners who require a balance between full-system performance and daily usability across both body configurations, the 200-cell specification delivers a substantive upgrade within a practical operating profile.
All downpipe components are fabricated from high-grade stainless steel and engineered to the same fitment standard as the valvetronic muffler system.
About TNEER:
TNEER is built around a single engineering conviction: the exhaust system is not a peripheral component. It is the primary interface between the engine and the driver's experience of it. Every system TNEER produces is developed to bring out the true voice of the engine it is built for, improving exhaust flow and delivering a distinct tone that is mechanical, raw, and directly connected to the character of the car.
The manufacturing process that defines TNEER's fitment standard is their high-tech robotic pipe bending technology. Rather than fabricating exhaust routing from multiple welded sections, TNEER forms each tube from a single continuous piece, bending high-grade material to navigate the spatial constraints of each specific engine bay without the diameter reductions, flow disruptions, and structural inconsistencies that welded multi-piece construction introduces. The result is an exhaust system with continuous tube geometry, perfect fitment to the platform it is built for, and no compromises in the routing that precision bending makes unnecessary.
For enthusiasts who regard sound and performance as inseparable elements of the driving experience, TNEER engineers each system to deliver both from the first throttle input.
Note:
- Downpipes are not CARB certified and may not be legal for use on emissions controlled vehicles; intended for off road use only.
- ECU tuning may be required due to removal of factory catalytic converters.
Fitment:
- Audi RS5 (B9) 2018-2020