AEM Adjustable Fuel Pressure Regulator JBtuned AEM Electronics Universal Adjustable EFI Fuel Pressure Regulator Kit How To Install AEM High Volume Fuel Pressure Regulator Adjustable Purchase Blox Racing Adjustable Fuel Pressure Regulator GUNMETAL Fit. AEM's Adjustable Fuel Pressure Regulator for Honda Acura is constructed of 6061 T 6 billet aluminum and is capable of supporting enough fuel flow for engines in excess of 1000 horsepower. Only AEM regulators have replaceable discharge ports which allows the user to tailor the regulator to the output of any fuel pump, whether it be the stock unit or a high flow aftermarket pump. The base of the regulator is tapped to accept the stock hose barb fitting or an AN fitting. The fuel pressure regulator can easily mount directly to the stock or AEM High Volume Fuel Rail.