Oil Pressure Regulator Turbosmart TS-0801-1012 Pro OPR Rising Rate Turbo - TS-0801-1012 - Turbosmart Pro OPR is a rising rate oil pressure regulator for your turbocharger. The Pro OPR is boost referenced, not unlike your fuel pressure regulator and allows lower oil pressure at lower boost pressures and increases oil supply pressure to the bearing system at higher boost levels. This is designed for large turbocharger systems and high boost levels where the additional pressure and confidence is required at high boost, high shaft speed and horsepower levels. The singel outlet design allows for simplicity of plumbing and connection to your single turbocharger system and while it is returnless, inline design it uses a boost reference to create a pressure differential. This pressure differential targets appropriate bearing pressure at low and zero boost pressure to eliminate your turbocharger digesting oil, while also providing increased oil pressure at higher boost levels to provide increased protection and confidence. Available Fixed, non referenced: Turbosmart OPR V2Rising Rate, Single Outlet Pro OPR Features Aluminum (6262 T6) anodised body and valve 1 x ⅛ NPT sensor / gauge port 1 x ⅛ NPT boost reference port 1 x 4AN Inlet 1 x 4AN Outlet Inline, return-less design Suitable for all engine oils Australian Designed and Manufactured Patent Pending Innocated Design Notes: This solution is designed for large turbocharger systems and high boost levels as found in Pro-Mod and other similar forms of Motorsport where large frame turbochargers and high boost levels are in use.