Eventuri BMW F8X M3 / M4 Black Carbon V2 Sealed Duct Upgrade Kit For V1The Eventuri V2 Sealed Duct Upgrade Kit for the BMW F8X M3 and M4 is designed specifically for customers who already own the original V1 Eventuri intake system and want to convert it to the fully sealed V2 configuration. By replacing the open V1 ducting with the revised carbon fiber sealed ducts, this upgrade improves intake air temperature stability and allows the intake system to operate with a consistent supply of ambient air. The V2 duct design