Eventuri FK8 Civic Type-R Carbon Charge Pipe - V3 Upgrade KitFOR EXISTING OWNERS OF THE PREVIOUS FK8 CARBON TURBO TUBE Performance Gain : 9hp, 9ft lb peak, 15hp, 18ft lb under 4k rpm Introducing our updated Carbon Turbo Tube for the FK8 which is now even larger in volume, allowing the turbo to function with even less restriction and therefore unleashing even more power. Our turbo tube was designed with these 3 key objectives: 1.) VOLUME : Inlet Diameters Eventuri 78mm at the intake end, increasing to 88mm VS