I added boost to the regulator causing the fuel pressire to rise some. It is only one leg of the "stool" and not a complete solution, YET.

Liquids move because of a difference of pressure, flowing toward lower pressure zones from higher pressure ones.

Flow is the rate the fluid moves under the pressure difference which is needed to overcome resistance in form of friction, viscosity, and turbulence factors. More pressure more flow, less resistance more flow, lower viscosity more flow and visa versa.

Flow is caused by pressure difference so the higher the pressure delta, the greater the resulting flow. On the dual CAI I had a fixed pressure ( the atmosphere) and had to overcome friction by reducing the velocity in the pipes to minimize fluid friction and turbulence by half which results in 1/4 the overall friction. I.E. two tubes; Woody