It moves rack 46mm forward for better Ackemann curve and a 5mm lower for oilpan clearance

causing serious problems

causing a pressure differential between the piston of the BOV and the cap which will vent pressure from the intake system

The Dual Port offers a 50/50 split between recirculating and vent-to-atmosphere

Clutch Kit - Xtreme Performance Extra Heavy Duty Sprung Ceramic KFD23003-1BX JRX9 It moves rack 46mm forwardXtreme Performance extra sprung ceramic kit 1BX Recommended for: Motorsport ApplicationsThese kits are available with sprung ceramic friction discs and are designed for motorsport applications where higher heat and torque capacity is required. These can also be used in some road applications. Specifications: Torque capacity Clamp load Increased over standard Sprung Ceramic Friction Disc Extra Heavy Duty Pressure Plate Kit contains everything you need