Yes my pressure starts out at about 6.5 psi then drops after a bit also, but I dont get the pressures you get, I already have a holley reg installed and I even tried to crank it up and no increase in pressure so its probably wide open already and just running straight pump pressure, whats acceptable as far as pressures go should I be concerned, whats too low? I know the 750DP doesnt like more then 9 but I shouldnt have to worry about that, The new pump is factory set at 7.5 I think it was but then again its not producing that, maybe a bad pump?