Turbo six on a Budget

I know this pump is over kill but it was the best deal I could find on a pump. All the aermotive pumps on the site are north of $300. I can mount the pump back near the tank. I have never used a intank pump so that was the reason I chose a inline pump because it’s a lot easier to access. If I am going to run 7~8 psi how many psi do I need my pump to be able to provide I might be making this up but I thought I read some where that you need x2 your turbo psi.
There is no ONE correct answer. You need boost pressure+whatever your base fuel pressure is. So fuel pressure needs to rise 1:1 with boost. If you run 7psi of base fuel pressure and 7 psi of boost through a carb you’ll have no fuel flow. So the regulator raises fuel pressure 1:1 with boost. So to maintain 7psi fuel pressure with 7 psi of boost you need 14 psi of fuel pressure. If you run 20psi of boost and 7psi of base fuel pressure you need 27psi of fuel pressure.