Impreza 2.5 RS Sedan AWD F4-2.5L SOHC (2002)
7. After connecting the pressure regulator vacuum hose, measure fuel pressure.
Fuel pressure:
Standard: 206 - 235 kPa (2.1. - 2.4 kgf/cm2, 30 - 34 psi)
NOTE: The fuel pressure gauge registers 10 to 20 kPa (0.1 to 0.2 kgf/cm2, 1 to 3 psi) higher than standard values during high-altitude
operations.