Turbosmart TS-0401-1001 FPR 800 Blue 1/8 NPT Fuel Pressure Regulator Made from billet aluminum it is a high performance fuel pressure regulator 1/8 NPT fittings, 30-70 pascals per square inch base pressure adjustments and 1:1 ratio 1 to 1 rising rate fuel pressure in blow off valve above the intake manifold pressure Ideal for modified street cars with up to 800 horsepower fuel systems using pump fuel Supplied with mounting bracket, vacuum fitting, gauge port blank