When it comes to high-performance vehicles, the Audi RS6 C8 stands out as a true powerhouse. With its aggressive styling, luxurious features, and twin-turbocharged V8 engine, it delivers both comfort and speed in equal measure. However, for enthusiasts seeking even greater performance, one of the most effective upgrades is installing aftermarket downpipes. Whether you choose catless downpipes or catted downpipes, the results can dramatically transform how your RS6 performs, sounds, and feels on the road.
What Are Downpipes?
Downpipes are a crucial component of a turbocharged car’s exhaust system. They connect the turbochargers to the rest of the exhaust piping. Stock downpipes typically come with restrictive catalytic converters designed to reduce emissions, but this restriction also limits exhaust flow. By upgrading to performance downpipes, you improve airflow, reduce backpressure, and unlock additional horsepower and torque.
For the Audi RS6 C8, aftermarket downpipes are available in two main options: catless and catted. Each has its own advantages depending on your priorities—performance, emissions compliance, or sound quality.
Catless Downpipes for Audi RS6 C8
Catless downpipes remove the catalytic converters altogether, allowing for the freest exhaust flow possible. This upgrade is highly sought after by drivers who want maximum performance gains.
Benefits of Catless Downpipes:
- Increased Horsepower and Torque – With fewer restrictions, the turbochargers spool faster, leading to noticeable power gains.
- Aggressive Exhaust Note – Catless downpipes amplify the sound, giving your RS6 a louder and more raw exhaust tone.
- Lower Exhaust Temperatures – Improved airflow helps keep temperatures down, benefiting engine health under high-performance driving.
- Better Turbo Response – Quicker turbo spool improves throttle response, making the car feel more responsive.
Drawbacks of Catless Downpipes:
- They produce a much louder exhaust, which may not be suitable for daily driving.
- Not emissions-compliant in many regions, which could pose inspection issues.
- May trigger check engine lights without a proper tune.
Catless downpipes are best suited for enthusiasts who prioritize track use or maximum performance over legal compliance.
Catted Downpipes for Audi RS6 C8
Catted downpipes, on the other hand, include high-flow catalytic converters. These are less restrictive than stock cats but still reduce emissions, making them a more balanced choice for street-driven cars.
Benefits of Catted Downpipes:
- Improved Performance with Compliance – While not as free-flowing as catless options, they still deliver significant gains compared to OEM downpipes.
- Refined Exhaust Sound – Catted downpipes provide a sporty tone without being excessively loud.
- Emissions Friendly – High-flow cats help keep emissions in check, improving your chances of passing inspections.
- Reduced Cabin Drone – A more comfortable driving experience, especially for daily commutes.
Drawbacks of Catted Downpipes:
- Slightly lower performance gains compared to catless versions.
- Higher cost due to the inclusion of high-flow catalytic converters.
Catted downpipes strike the perfect balance for enthusiasts who want improved performance and sound without completely sacrificing emissions compliance.
Choosing Between Catless and Catted Downpipes
When deciding which option is best for your Audi RS6 C8, consider how you plan to use the vehicle. If you primarily drive on the street and need to remain emissions-compliant, catted downpipes are the smarter choice. However, if you’re building a track-focused machine and want the most aggressive exhaust and maximum power, catless downpipes will deliver the results you’re looking for.
It’s also essential to pair your downpipes with an ECU tune. Without a tune, your car may throw error codes, and you won’t unlock the full potential of the upgrade. Many tuning companies offer specific maps designed for RS6 C8 downpipes, ensuring optimal performance and reliability.
Final Thoughts
Upgrading to aftermarket downpipes is one of the most impactful modifications you can make to your Audi RS6 C8. Whether you choose catted or catless versions, both options significantly enhance the car’s performance and sound. By carefully weighing the pros and cons, you can select the setup that best suits your driving style and goals.
