Aem honda/acura these regulators will work well up to 1000 horsepower. our patented interchangeable discharge ports enable the regulators output to match the output of any fuel pump. aem includes a custom barb fitting to accommodate the factory fuel hose and the base of each regulator is tapped to accept a -6 an or 9/16”x18 fittings. for universal applications: our patented interchangeable discharge ports enable the regulators output to match the output of any fuel pump. our universal fuel pressure regulator is tapped to accept a -6 an, or 9/16”x18 fittings and includes a 1/8 npt port for a fuel pressure gauge or pressure sensor pick up.