You have the hoses backwards
The Fuel Pressure Regulator(FPR) looks like a cylinder and has a vacuum hose attached AND the RETURN fuel line hooked to it
Return line has no pressure, its open at the other end inside the gas tank
The pressure line connects to drivers side of fuel rail, which is sandwiched in between upper and lower intake, this is the pressure line from the fuel filter/fuel pump
Fuel flows from the pump to the filter then to the fuel rail, then to injectors, then to FPR, any pressure over 35psi pushes FPR open and fuel flows back to gas tank on return line
The Fuel Pressure Regulator(FPR) looks like a cylinder and has a vacuum hose attached AND the RETURN fuel line hooked to it
Return line has no pressure, its open at the other end inside the gas tank
The pressure line connects to drivers side of fuel rail, which is sandwiched in between upper and lower intake, this is the pressure line from the fuel filter/fuel pump
Fuel flows from the pump to the filter then to the fuel rail, then to injectors, then to FPR, any pressure over 35psi pushes FPR open and fuel flows back to gas tank on return line