Exhaust Audi S4 B7 (2004–2008)

The Audi S4 B7 (2005-2009) offers a range of stainless steel sport exhaust systems designed to improve horsepower, torque, and sound quality while reducing backpressure. Options include complete cat-back lines, resonated and non-resonated mufflers, valved silencers for sound customization, intermediate pipes, performance catalytic converters, and custom exhausts. Typical pipe diameters range from 57 to 76 mm, with quad outlets between 76 and 100 mm.

Exhaust systems for the Audi S4 B7 are primarily made from high-grade stainless steel, such as inox 304 or similar premium stainless steel. This material choice ensures excellent durability, corrosion resistance, and longevity, suitable for demanding driving conditions and performance enhancement.

Aftermarket exhausts are designed to reduce backpressure and improve gas evacuation, which can increase engine performance. Benefits include:

• Increased horsepower and torque
• Optimized exhaust gas flow through larger diameter pipes
• Improved throttle response and power delivery

Proper installation and compatibility with your vehicle’s engine and catalytic converter are essential to avoid power loss. Custom or plug & play options exist to ensure an optimal fit and performance upgrade.

Sport exhausts for the Audi S4 B7 usually offer a deeper, more aggressive, and sporty sound compared to stock systems. Some systems include valve-controlled mufflers allowing you to switch between a quieter, touring sound and a louder, aggressive tone:

• Resonated setups to reduce drone at cruising speeds
• Non-resonated for louder, track-style sound
• Valve mufflers for adjustable sound levels

This lets you balance daily driving comfort with spirited driving sound demands.

Yes, to achieve the best performance and compliance, consider the following tips:

• Ensure the exhaust system matches your vehicle model and year precisely (sedan, avant, or cabriolet; years 2005-2009)
• Select compatible performance catalytic converters if required
• Use original or high-quality gaskets and mounting hardware during installation
• Consult professional installers familiar with Audi exhaust systems
• Valve mufflers may require wiring for remote control features

Following these guidelines helps avoid power loss and ensures sound quality and durability.

The choice of exhaust pipe diameter and outlet design affects both performance and sound. Typical ranges for the Audi S4 B7 sport exhaust include:

• Pipe diameters between 57 mm and 76 mm to improve flow without compromising low-end torque
• Quad outlet tips sized around 76 to 100 mm for a sporty look and improved sound dispersion
• Resonated or non-resonated mufflers based on desired drone and sound level

Choose a diameter that balances performance gains with engine load and throttle response for your vehicle's 4.2 V8 engine.

Upgrading to a sport exhaust system on the Audi S4 B7 offers several advantages:

• Improved engine power and torque through reduced exhaust backpressure
• Enhanced, deeper, and sportier exhaust sound with options for adjustable sound via valves
• Use of high-quality stainless steel materials for corrosion resistance and long life
• Plug & play or custom-fit systems for straightforward installation
• Optimized exhaust gas evacuation improving engine efficiency

These benefits contribute to both driving pleasure and vehicle performance.

For your Audi S4 B7 exhaust needs, consider buying from specialized performance and tuning shops that offer:

• Wide ranges of stainless steel cat-back and valved exhaust systems
• Custom exhaust solutions and professional vehicle configurators
• Expert advice on compatibility and installation tips
• Access to installation guides and technical support

Always verify system compatibility with your exact vehicle model and engine. Proper selection and installation ensure you meet performance and emission requirements safely.

For technical assistance and quality products, professional automotive part suppliers specialized in exhaust systems for Audi vehicles are recommended.