Eventuri Audi C8 RS6 / RS7 PCV Breather Adapter Kit (2023+)The Eventuri PCV Breather Adapter Kit for the Audi C8 RS6 and RS7 (2023+ model year) is a retrofit solution designed to ensure compatibility between early production Eventuri carbon intake systems and the updated factory crankcase ventilation connection found on later vehicles. Audi revised the PCV interface at the turbo inlet during the 2023 model year, which means intake systems produced prior to this change require an updated breather connection