Choosing Base Fuel Pressure

As I piece together my fuel system for my build, I started going down the rabbit hole of injectors. Then I decided to step back and figure out where I want my base fuel pressure.

In the past, I've just set this to 43.5 PSI and moved on, then chose injectors that flow what I need for the power I want at that pressure. However, with this build I went overboard with the fuel system:

Radium surge tankTI Automotive E5LM brushless pumpBCP100 controller from Injector Dynamics (which will flow 1,100 L/H)This gives me the opportunity to play with base fuel pressure more. Should I be looking at bumping my base to say 70-80 PSI, then looking at injectors that meet my needs at that pressure? Would the injectors perform better here?

I've tried to do some research but haven't found a ton of info on the subject, at least from what I could find. Thanks in advance!

https://injectordynamics.com/id-bpc100/

Is this normally aspirated, or forced induction? If forced induction, what is the expected maximum boost? You want to make sure the system can supply the desired differential pressure at that boost level.

I typically use 4 bar (58 psi) as a base fuel pressure on normally aspirated builds. Hoping to achieve good atomization with larger injectors at low pulse widths (i.e. idle).

What is your perceived benefit of running such high fuel pressure?

Particularly with saturated drive injectors, as you increase pressure they struggle to open. The worst case for this is during cranking, when your battery voltage dips down to 9-10V at the injector - they will simply not open, or struggle to open.

When you get up in pressures and flows, you will need to start adding lubricant additive to the fuel to keep the punp alive, as they are effectively overvolting the brushless pump to achieve those flow rates (those pumps are around 500lph driven at stock levels)

Also, depending on the boost pressure you are running, you are going to run the pump in the hardest condition possible. 80psi base would leave you with 30psi of boost before you won't be able to achieve higher pressures and in achieving those pressures, you are only going to tax your electrical system as the current draw will be higher.

As David has indicated, typically a 4 bar base pressure would be more typical.

Also, it is more typical to run a mechanical fuel pump when 100+psi fuel pressures are required reliably (like when you are running 4 bar base pressure and 4-5bar of boost)