This Improved 'working ratio' is achieved through an increase to the effective surface area of the diaphragm & revisions to the actual springs fitted resulting in greater leverage of the forces the actuator is working against (boost and backpressure) while still being super-responsive

Check out the Nissan S13 rear suspension kit

Replacement Diaphragm for Power Port BOV

Adaptor - Adapts Race Port and Big Bubba Fitting to 38mm Type 3 (grub screw style) inlet fitting

TS-0205-1016

Clutch Kit - Xtreme Performance Heavy Duty Cushioned Ceramic 620Nm KMI24001-1C TPMS This Improved 'working ratio' isXtreme Performance Cushioned Ceramic kit 1C Recommended for: Motorsport ApplicationsThese kits are available with cushioned 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 620Nm Clamp load Increased over standard Cushioned Ceramic Friction Disc Heavy Duty Pressure Plate Kit contains everything you