Audi S4 B9 Active Exhaust Systems – Performance, Sound & Control

Audi S4 B9 Active Exhaust Systems – Unleash Maximum Potential

The Audi S4 B9, produced from 2016 to 2023, is powered by the impressive 3.0 TFSI V6 Turbo delivering 354 HP and Quattro all-wheel drive. While the stock exhaust delivers refinement, upgrading to a Audi S4 B9 active exhaust system transforms your driving experience with enhanced performance, deeper tones, and total control over your exhaust sound.

Why Choose an Active Exhaust System?

An active exhaust system uses electronically controlled valves that allow you to adjust your exhaust tone instantly. Switch between quiet, refined operation for city driving and an aggressive, motorsport-inspired roar for spirited runs. This versatility makes it the ideal upgrade for enthusiasts who want performance without sacrificing comfort.

Key Benefits of Audi S4 B9 Active Exhaust Systems

• Adjustable Sound Profiles – Effortlessly choose between comfort, sport, and race-inspired modes.
• Performance Gains – Reduced backpressure and optimized exhaust flow improve horsepower, torque, and throttle response.
• Motorsport-Inspired Acoustics – Deep, powerful tones under acceleration without intrusive cabin drone.
• Premium Materials – Built from high-grade stainless steel or titanium for maximum durability and weight savings.
• Perfect Fitment – Engineered exclusively for Audi S4 B9 Sedan and Avant models.

Best Active Exhaust Options for Audi S4 B9

Our collection of Audi S4 B9 active exhaust systems provides performance-driven solutions tailored to different driving needs:

• Valved Cat-Back Exhaust Systems – Full upgrades for maximum power gains and fully adjustable sound profiles.
• Axle-Back Exhaust Kits – Subtle enhancements to exhaust tone without replacing the entire system.
• High-Flow Downpipes – Improve turbo spool, increase power, and deliver a sharper throttle response.
• Titanium Active Exhaust Systems – Ultra-lightweight options designed for track-focused builds.
• Resonator Deletes – Create an aggressive, motorsport-inspired tone while maintaining smooth airflow.

Compatibility with Audi S4 B9 Models

All active exhaust systems are designed for precise fitment across the Audi S4 B9 range:

• Audi S4 B9 Sedan 3.0 TFSI V6 Turbo 354 HP
• Audi S4 B9 Avant 3.0 TFSI V6 Turbo 354 HP
• Pre-facelift and facelift (B9.5) versions

Sound Profiles and Driving Modes

Modern Audi S4 B9 active exhaust systems integrate seamlessly with factory drive select systems or include wireless remote controllers:

• Comfort Mode – Quiet and refined, perfect for everyday commuting.
• Sport Mode – Deeper, throatier tones for spirited drives.
• Race Mode – Maximum airflow, maximum volume, and an authentic motorsport soundtrack.

Switch between profiles instantly to match your driving style and preferences.

Performance Gains and Driving Experience

Upgrading to a Audi S4 B9 active exhaust goes beyond enhancing sound. With optimized exhaust flow and reduced backpressure, you’ll enjoy improved turbo efficiency, faster throttle response, and a more engaging driving experience. This is the perfect upgrade to unleash the full potential of the 3.0 TFSI engine.

Why Upgrade Your Audi S4 B9 Exhaust?

Whether your goal is an aggressive soundtrack, improved performance, or complete control over your exhaust tone, a Audi S4 B9 active exhaust system delivers it all. It combines everyday refinement with motorsport-inspired performance for true driving enthusiasts.

Key Takeaways

• Premium Audi S4 B9 active exhaust systems designed for maximum performance
• Valved technology offers fully adjustable sound profiles
• Optimized exhaust flow improves power, torque, and response
• Perfect fitment for Audi S4 B9 Sedan and Avant models

Upgrade your Audi S4 B9 with a high-performance active exhaust system and experience a new level of sound, control, and driving excitement.