I haven't heard from Nick yet. In the interest of a direct comparison between the two pumps I have already tested, I'd go through the motions of dropping my tank again and swapping the DW pump in and testing at some different pressures. I will also try and figure out how I can tap the wire (without compromising the insulation somehow) feeding the pump to see exactly what voltage we have. I can easly catch the voltage on the battery side of the hotwire relay I am using which is only about 3' from the pump..... but if I want to catch the voltage on the pump side of the relay.... it will be more tricky unless I can make some sort of pigtail I can install on the factory weatherpack connector from a junkyard connector..... that is the only way to do it on the pump side without compromising the insultion on the wire....