FixVault

Fuel Pressure Regulator

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.
Service Data & Specifications - Fuel Pressure Regulator

Fuel pressure at Idling kPa (kg/cm2 , psi) Approximately 350 (3.57, 51)