A Moroso fuel log increases the flow orifice to nearly twice that of two regulators combined, creating a totally free-flowing fuel system that allows the pumps to deliver full capacity at all times. Eliminates Y-fittings, T-fittings and restrictive fuel blocks. Includes shims to adjust pressure from 6-10 psi and requires a fuel return line to the tank. Accepts 1/8'', 1/4'' and 3/8'' NPT fittings.