I haven't followed every word as Sumotoy has been on my ignore list a few days and all I see is the cliff notes version when someone quotes him.
But is it possible that when the truck is WOT that the stock pump's flow rate can't keep up with consumption and the pressure in the fuel rail drops leaning out the AF ratio.
This is what I had gathered a while back and for my point that flow rate of the pump could influence PSI. If that's the case then only a pump with a higher flow rate could get the dead done.
Of course this could also mean excessive PSI in the rail if at low consumption if the return line restricted flow to influence rail pressure.
Sorry for the poor terminology as this is sort of new to me.
But is it possible that when the truck is WOT that the stock pump's flow rate can't keep up with consumption and the pressure in the fuel rail drops leaning out the AF ratio.
This is what I had gathered a while back and for my point that flow rate of the pump could influence PSI. If that's the case then only a pump with a higher flow rate could get the dead done.
Of course this could also mean excessive PSI in the rail if at low consumption if the return line restricted flow to influence rail pressure.
Sorry for the poor terminology as this is sort of new to me.