Fuel Pressure Regulator Control Solenoid Valve
WARNING: This page is about a different car, the 2004 Acura 3.5RL, 2003 Acura 3.5RL, 2003 Acura 3.2TL, and 2003 Acura 3.2CL. However, it is still accessible from the selected car via links, so may be relevant.
See FUEL PRESSURE REGULATOR CONTROL SOLENOID VALVE (3.5RL) under FUEL DELIVERY under FUEL SYSTEM.