Crane Cams now offers precision manufactured, Adjustable Fuel Pressure Regulators and Conversion Kits for today's popular computer controlled, electronic fuel injection systems. These regulators and kits allow a wide range of adjustment from full-throttle operation where maximum fuel pressure is required, to idle and part throttle operation where maximum fuel pressure is limited. Crane now allows you to precisely "tune" fuel pressure needs when using performance camshafts and aftermarket fuel system components. This improves idle quality. They are easily installed and quickly adjusted with a screwdriver. See 99470-1 Installation Instructions or 99471-1 Installation Instructions . (Requires Adobe Acrobat reader. Download time will vary depending on size of file.) Adjustable Fuel Pressure Regulator General Motors V-8 with T.P.I. (except LT-1) - Conversion Kit, utilizes factory diaphragm. 99470-1$77.40 Adjustable Fuel Pressure Regulator Ford V-8 5.0L H.O. or 1986-93 S.F.I. - Complete regulator with broader adjustment range and improved flow control. 99471-1$142.00