Quick fuel pump question.

ok im hoping this will compensate for the pressure drop. when the engine was on the dyno at wide open throttle the pressure dropped from around 6 to 3 psi with a factory style fuel pump. so im hoping if the hp fuel pump is putting out around 7.5 psi and i put a regulator in after it even with the fuel pressure drop the pump should keep it at at least 5 psi. does this sound right.