PSM 2006+ Z33 & Z34 Speed Sensitive Power Steering Delete FittingListing is for: 1x Delete fitting Smooth out your power steering feel AND make clearance for a rack forward relocation mod. The OEM speed sensitive power steering solenoid bypasses the hydraulic assist pressure and diverts it back to the reservoir which makes steering more difficult, however in drift cars with double the steering angle, the leverage of the shortened knuckle makes it harder to steer and it requires more than the usual level of power