If you’re an Audi RS6 C8 owner, chances are you’re always looking for ways to get more power, more sound, and a more thrilling driving experience. One of the most effective performance upgrades for this beastly wagon lies in the exhaust system — specifically, the Audi RS6 C8 downpipes catless and catted options.

But what exactly are downpipes? What’s the difference between catless and catted? And most importantly, which one is right for your driving style? Let’s dive in.

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What Are Downpipes and Why Do They Matter?

The downpipes are a critical component of your car’s exhaust system. They connect the turbochargers to the rest of the exhaust, playing a major role in how exhaust gases flow out of the engine. In high-performance cars like the RS6 C8, upgrading the downpipes can significantly improve horsepower, turbo spool time, and exhaust sound.

Factory downpipes come with restrictive catalytic converters designed to meet emissions standards. But if your goal is to boost performance, an aftermarket solution — like audi rs6 c8 downpipes catless and catted — offers a better flow and more aggressive sound.

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Catless Downpipes – Pure Performance

Catless downpipes are exactly what they sound like: they remove the catalytic converters altogether. This allows for the least restriction, which means:

• Maximum horsepower gains
• Faster turbo response
• Raw, aggressive exhaust note

For RS6 owners focused on track days or building a show-stopping performance machine, catless downpipes are the ultimate choice. When paired with a tune, they can unleash significant gains in both torque and horsepower.

However, catless setups come with a few trade-offs:

• They’re not street-legal in many regions due to emissions regulations
• You might trigger a check engine light (CEL) unless you tune the ECU or install a simulator
• The sound can be intense — sometimes too much for daily driving

Still, for purists chasing peak performance, catless downpipes are hard to beat.

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Catted Downpipes – The Best of Both Worlds?

Catted downpipes, on the other hand, retain a high-flow catalytic converter. These performance-oriented cats still offer substantial flow improvements over OEM downpipes but with added benefits:

• Street-legal in more areas
• Lower emissions and no harsh exhaust smell
• Reduced risk of triggering a CEL

Catted options are perfect for RS6 C8 drivers who want better performance and sound without fully compromising street legality or comfort. You’ll still get power gains, especially with a tune, and the exhaust tone becomes deeper and more pronounced — without becoming obnoxious.

Modern catted downpipes also feature advanced materials like 200-cell or 300-cell catalytic cores, which offer impressive flow rates while keeping emissions in check.

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Choosing Between Catless and Catted Downpipes

The right choice depends on how you use your RS6 C8. Here’s a quick breakdown:

Driving Style	Best Option
Track-Only / Performance	Catless Downpipes
Daily Driver	Catted Downpipes
Occasional Weekend Runs	Catted Downpipes (or switchable)
Off-Road / Tuning Builds	Catless (with ECU tune recommended)

Ultimately, both Audi RS6 C8 downpipes catless and catted options provide performance benefits. It’s all about striking the balance between sound, legality, and driving enjoyment.

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Final Thoughts

The Audi RS6 C8 is already a monster straight from the factory, but there’s always room for improvement. Swapping out the OEM downpipes with aftermarket options — whether catless for max gains or catted for street compliance — is one of the best bang-for-your-buck upgrades.

Before making your choice, consider your goals: is your RS6 a daily cruiser, a weekend warrior, or a full-on track machine? Once that’s clear, choosing between Audi RS6 C8 downpipes catless and catted becomes a no-brainer.

No matter which route you take, get ready for a more exhilarating, responsive, and downright exciting RS6 experience.

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Want to hear the difference yourself? Check out some sound clips and dyno runs from real RS6 owners who’ve made the switch. Performance has never sounded this good.

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