Table of Contents
The Audi B9 S4 is a remarkable performance sedan that combines luxury with sporty driving dynamics. However, enthusiasts often seek ways to enhance its performance and sound. One popular upgrade is the Milltek Sport Cat-back Exhaust system, which promises to add 15 horsepower and an aggressive exhaust note.
Understanding the Milltek Sport Cat-back Exhaust
The Milltek Sport Cat-back Exhaust is designed specifically for the Audi B9 S4. This aftermarket exhaust system is made from high-quality materials and engineered to improve both performance and aesthetics. By replacing the factory exhaust, it allows for better airflow, which is essential for increasing horsepower.
Key Features of the Milltek Sport Cat-back Exhaust
- High-quality stainless steel construction for durability and longevity.
- Optimized design for improved exhaust flow and reduced back pressure.
- Aggressive sound profile that enhances the driving experience.
- Easy installation with no cutting required.
- Compatible with factory and aftermarket components.
Performance Gains
One of the most significant benefits of the Milltek Sport Cat-back Exhaust is the increase in horsepower. With a gain of approximately 15 hp, drivers can feel a noticeable difference in acceleration and overall performance. This upgrade not only enhances the power output but also improves throttle response, making the driving experience more engaging.
How the Exhaust System Works
The Milltek exhaust system works by allowing exhaust gases to exit the engine more efficiently. The larger diameter piping and optimized bends reduce restrictions that are present in the factory system. This results in lower back pressure, which is crucial for turbocharged engines like the one in the B9 S4.
Sound Characteristics
In addition to performance gains, the Milltek Sport Cat-back Exhaust is known for its aggressive sound. It produces a deep, throaty tone that enhances the sporty character of the B9 S4. The sound is not overly loud, making it suitable for daily driving while still providing an exhilarating experience when accelerating.
Comparing Sound Profiles
- Factory exhaust: Quiet and refined, suitable for luxury driving.
- Milltek exhaust: Aggressive and sporty, perfect for performance enthusiasts.
Installation Process
Installing the Milltek Sport Cat-back Exhaust is a straightforward process that can be completed with basic tools. The system is designed to fit directly onto the existing hangers, making it a bolt-on upgrade. Here’s a brief overview of the installation steps:
- Lift the vehicle and secure it on jack stands.
- Remove the factory exhaust system from the downpipes.
- Install the Milltek exhaust, ensuring all connections are secure.
- Check for any leaks and ensure proper alignment.
Conclusion
The Milltek Sport Cat-back Exhaust is an excellent upgrade for Audi B9 S4 owners looking to enhance their vehicle’s performance and sound. With a gain of 15 horsepower and an aggressive exhaust note, it transforms the driving experience while maintaining the luxury that Audi is known for. Whether you’re a daily driver or a track enthusiast, this exhaust system is sure to impress.