pressure regulator

[JScoob]

Has anyone installed a pressure regulator to their WI system? I have this nagging feeling that there is just way too much flow and pressure variance, caused by both the pressure switch hysterisis and pump cycles.

I have been playing with both the shurflo and aquamist pump and I while the shurflo may flow more, I definitely don't like its pumping characteristics. The pump cycles are much slower than the aquamist and thus the system pressure swings detectably from some low pressure to 100 psi. I can literally feel my car surging in sync with the pump cycles. The accumulator merely delays the inevitable. So to fix that I'd need the 150psi shurflo + accumulator and a press reg set to 100psi - which should theoretically result in a constant 100 psi across the board.