Hi Steve,
I have an IO-360 angle valve with Bendix FI, I have not had it from new so I don?t know if it was ever any different and I don?t know much about how it works either. My fuel pressure is, idle around 18 give or take, cruse at 2450 rpm 24 psi, and full power full rich 2750 rpm 21 to 22 psi This setting flows 20+ GPH at about 150 to 200 degrees ROP. The engine runs perfict and I have never seen the fuel pressure above 25 psi, normaly it?s never above 24. My backup fuel pump is operated by hand (Christen manual pump/fuel selector valve/filter unit) so all my figures are only with the engine driven pump operating. I don?t know any thing about this just thought you might like to see the comparison between yours and one similar.