I installed a B&M fuel pressure gauge last night and now I have a better understanding how my fuel pump and fuel pressure regulator are working together. When the vacuum hose is connected between my fuel pressure regulator and my intake manifold I get 31PSI at idle and 40PSI at full throttle and when I disconnect the vacuum hose it jumps to about 40PSI. From what I have read on the honda forums this seems to be a normal reading for a stock system like mine. Once I add bigger injectors and and turbo I will have to get an adjustable fuel pressure regulator and bump that up to 45-50 PSI with out the vaccuum line connected. Below is a picture with my gauge showing 31PSI at idle.
