1st gen fuel pump flow rate (inline external pump)

Alright, anyone who knows:

Back when I started cutting my truck in half, I went out and picked up a pump using the normal calculation of 10 GPH for every 100 BHP for EFI motors. So I grabbed a fuel pump that is spec'd at:

Maximum Flow Rating: 25.0 gph (Good to 250 HP)
Maximum Pressure: 45.0 PSI

I see most guys who convert to fuel cell/external pump run a Walbro 190 (appx 50 gph) flow rate. So my question is, is there something I don't know about the flow rate where the 5VZ-FE needs more flow? Should I return the pump I'm using to go to something with higher gph/lph?

Picture related, but only for attention.

 

These other people are running stock non induction engines less then 250 horse power??

Might just be brand name and model favorite .

With EFI more fuel is better then not enough

 

Could be, I guess I'll find out if it doesn't run. Lol

 

Update, for anyone who wants to run an external pump, 5vz must have a reference flow rate it wants to see. The 80 LPH pump was not enough. Walbro makes a 155 lph 45psi pump that worked just fine.

 

Long shot but I appreciate your update. Do you have any other information how you got this to work?
I'm trying to get everything I need to run this fuel cell of mine.