Glad to see you guys are backing up my claims with real world testing. Great job!
If you guys want to get to a 50/50 mix you'll need to upgrade to the dual in tank pumps or at least to an upgraded in tank pump and boost referenced fuel pressure regulator.
I wonder if just taking the stock pump setup, drilling a hole for a return line and then putting in a fuel pressure regulator would work. The key is to force more fuel in by raising pressure and referencing it to boost.
One of you crazy guys try it out!