You can expect an increase of 1 to 2psi (peak boost) but the real improvement is in the mid-range

Benefits include: Direct fit upgrade for the factory BOV on EVO IV to X

Vacuum Low - 22inHG

Original swaybar can be used in front

as well as many built-in safety features to help save the chassis during impact

Clutch Kit - Xtreme Performance Extra Heavy Duty Organic KGM22018-1AX Xtreme Clutch Pro You can expect an increaseThe stage 1 clutch kit uses an upgraded pressure plate with extra increased clamping pressure, combined with an organic friction disc. Stage 1 delivers substantial increases in performance and power holding capability whilst retaining near factory type driveability, and is designed primarily for high performance road going vehicles. These kits feature a high quality cover with increased clamping force compared with standard, between 40 120% depending