Ketchup, thanks for sharing the data. The question then becomes: how do the different flow rates affect the sound when PSI remains the same? Did you notice differences in the sound with different pumps with the regulator allowing the same PSI?
Frogman,
There was no listening done during these tests. I barely had enough time to complete the tests as is and my ET-2.5 is not even mounted on a turntable. I have the data now, though, so listening tests should be possible down the road.