2010-2017 CAP Audi 3.0T Supercharged Catted 400 Cell Test Pipes - Audi B8 S4, S5, A6, A7, A8, Q5, SQ5

Please note, this is a pre-order item. The ETA for these catted testpipes is approximately December 10, 2026. All pre-order sales are final and cannot be canceled.

CAP Audi Supercharged 3.0T 400-Cell Catted Test Pipes – Now Featuring EPA-Certified Catalytic Converters

Looking to improve exhaust flow, increase horsepower, and maintain catalytic converter functionality?

Our CAP 400-Cell Catted Test Pipes are designed for Audi's 3.0T Supercharged V6 platform, delivering improved exhaust flow, enhanced performance, and a refined exhaust note.

Now featuring EPA-Certified 400-cell catalytic converters, these upgraded test pipes combine high-flow catalytic technology with our industry-leading stainless steel construction and integrated heat shielding.

Key Features

• NEW – EPA-Certified Catalytic Converters: Updated 400-cell catalytic converters featuring EPA identification markings.
• 400-Cell High-Flow Catalytic Converters: Designed to improve exhaust flow while retaining catalytic converter functionality.
• Industry-Leading Construction: Manufactured using some of the thickest 304 stainless steel available for exceptional strength and durability.
• Precision TIG Welding: High-quality welds designed to withstand demanding exhaust temperatures and driving conditions.
• Integrated Stainless Steel Heat Shielding: Helps manage radiant exhaust heat and protect surrounding engine components.
• Direct Bolt-On Fitment: Designed for compatibility with OEM and CAP 2.5" downpipes.
• Enhanced Exhaust Note: Produces a deeper, more refined exhaust tone while helping reduce excessive rasp compared with catless configurations.
• Improved Performance Potential: Reduced exhaust restriction can support increased horsepower, torque, and throttle response.

Fitment & Notes

• Fits: Audi B8/B8.5 S4, S5, A8, Q5, SQ5 (3.0T Supercharged)
• Does NOT fit: Audi Q7 or 2005–2011 C6 Audi A6

Important Compliance Notice
These test pipes are intended for off-road or racing use only. They are not street-legal and do not comply with emissions standards or CARB regulations. Buyers are responsible for ensuring compliance with local laws and regulations.

Warranty Disclaimer

Our 400-cell catted test pipes have been tested on dual-pulley setups; however, catalytic converters are considered a wear item and are not covered by warranty.

The warranty is void under the following conditions:

• Aggressive burble, crackle, anti-lag, or flame-producing tuning
• Two-step launch control or unburnt fuel detonation in the exhaust
• Sustained high-heat use such as drag racing or track driving
• Improper installation or physical damage

These conditions exceed normal operating limits and can lead to premature catalytic failure. For build-specific compatibility, please contact us prior to purchase.