no separate solenoids

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

Mounting Bolts/Nuts: 12x1

e-Boost STREET control unit

Clutch Kit - Xtreme Performance Heavy Duty Organic 240Nm KPU20004-1A BMW no separate solenoidsXtreme Performance sprung organic kit 1A Recommended for: Street use in vehicles with minor engine modifications. Sprung organic clutch kits offer exceptional driveability for vehicles used daily but also have performance modifications. The sprung organic disc offers improved dampening which reduces the shock loading on the transmission. Specifications: Torque capacity 240Nm Clamp load Increased over standard Organic Friction Discs Heavy Duty Pressure