I also have the needswings fuel system, and so far the fueling needs are being met by the fuel pressure alone, and I haven't seen the alarm trigger the fuel pressure increase yet. I am wondering if the leaning before was due to an old (30k mile) regulator.and the pump/adjustable regulator alone may have solved the problem. Having said that I am happy that my fuel system is now capable of handling anything I throw at it............ A lot of things to install and wire, but ultimately worth it in the end