Onboard (0-5v) Valve Position Sensor

and 7psi outer spring (Brown/Pink)

They're also simply not designed to handle increased boost levels

Spring - Suit Turbosmart Big Bubba BOV - 7 inHg

Replacement Diaphragm for Twin Port or HP IWG-75 actuators

Clutch Kit - Xtreme Outback - Extra Heavy Duty Organic KTY23001-1AX JR33 Onboard (0-5v) Valve Position SensorXtreme Outback Heavy duty sprung organic kit 1A Recommended for: Vehicles with significant performance modifications, are daily driven but also used off road and vehicles that tow regularly. The Extra Heavy Duty range of upgrades from Xtreme Outback are designed to offer the highest levels of performance for heavily modified street and off road vehicles. These kits offer a significant increase in clamping force (30 60% above the factory clutch) over