needing to know the amount of pressure the intake pump gives out. I know that it is a low pressure high volume pump
thinking about putting in a fuel filter between the pumps. I pulled my filter and had a lot of rusty looking fuel in it. I did drop and cleaned my tank with acid and it turned out like new but doesn't seem to be lasting, cleaned the tank before installing new pumps and filters

 

the intank pump just transfers gas, its not a pressure pump. its purpose is to prime the main pump so there's no cavitation.

if you disconnect the fuel link from the tank to the filter/main pump assembly, and run a hose into a container, then power the transfer pump for 10 seconds, I think the transfer pump needs to pump something like 1/2 to 1 fluid ounce per second to keep the engine happy under all extreme conditions. be *very* careful with electricity around gasoline, a spark could easily ignite vapors.