Ive been researching the walbro pump. And on their chart the pump seems to top out around 110 psi. Im thinking of going turbo so im trying to understand how @ 8 pounds of boost the pump is going to supply adequate fuel; since with a 12:1 fmu that will place the fuel pressure around 140psi

Too tired for the scientific expl., but the charts I've seen have it topping out around 140 @ 12V, 155ish @ 13.5V. Either way, I ran that setup (12:1 FMU, factory reg, stock inj, 8# boost) and it stuck 12.0 afr up through redline.