If you have stock sized injectors, then your idle pressure should be around 48 psi. If you remove the vaccuum line from the JR FMU while the engine is running, the pressure (static) should be 60 psi. If it is not, then you need to loosen the jam nut on the top of the JR FMU and adjust the static pressure.
If you leave the vaccuum line connected to the JR FMU while you are adjusting the screw on top, you will NOT see any significant change in pressure because you are NOT adjusting the point in which you are viewing.
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