Required Fuel Pressure for Sequential Fuel Injection

I know absolutely zero about this stuff, so I need some help.

What would the approx required fuel pressure for sequential fuel injection be? I want to put an in-tank pump in the car, from its externally mounted one.

I have a Weber style injector set-up with a 20 year old Haltec brain. I was to change to a Holley Terminator X, or something similar...
Engine - 390 CI Ford Cleveland - 36 LB injectors
the brain only has to control the FI - Nothing else - No transmission, no nitrous, no boost, just basic FI and associated FI functions.

Does anyone have any real-world experience with this? Please don't tell me to read a book as I already know I can read a book or go to websites but they all leave me with more questions than answers. Has someone actually used a Terminator X or something similar for the brain? Is one brand better than the other?

TIA....Gary

I am removing the nitrous.....
Attachment 87774

Need to know what injectors are in it. Most are either going to be 3bar (43psi) or 4bar (58psi).

Quote:

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Originally Posted by wrath

Need to know what injectors are in it. Most are either going to be 3bar (43psi) or 4bar (58psi).

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Here is what I was told they are...
Bosch 36 lb/hr green top EV1 style

Thanks.......Gary

Looks like they'll go from 2.5bar/36psi to 7bar/100psi.

So pick your peak horsepower and get a pump that will flow the rate required through the injectors at that hp and pressure plus 20%.