Valvetronic Designs 400-Cell Catted Downpipes for the Audi C8 RS6 and RS7 deliver improved performance while maintaining catalytic converters for a balanced setup.The 400-cell metallic catalysts increase exhaust flow and reduce backpressure, improving turbo response and overall throttle feel. These downpipes provide a deeper, more aggressive sound without the harshness often associated with catless systems.Engineered from premium stainless steel for durability under extreme heat, the system installs using factory mounting points for a direct bolt-on upgrade. Tuning may be required to prevent check engine lights and to maximize performance gains.
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