I did a search, didn't find a whole lot of info that I was looking for.

Whats the min pressure one would consider acceptable for the p-pumps? I'm gonna be doing a p-pump conversion in the nearer future, and wondering how far I need to go fuel pump wise. With my FASS now, I can hold 20 psi going 100 km/h. I know the mech lift pump will put out quite a bit more pressure at the same rpm, but I've also seen plenty of posts on here about 0 psi at WOT with them as well. Even though the FASS has lower pressure, I'm pretty confident it will out flow a mech lift pump on the top end. Is a p-pump gonna live, and more importantly, live happily on 15-20psi of pressure, or am I doomed to upgrading to a different lift pump?

 

What GPH FASS you have? The 95 GPH can be bumped to 45 PSI if needed. The 150 GPH can only be raised to 25ish. If you dont get too crazy with your p-pump, the 95 should work fine. NOW if you are going to get crazy with a 215 pump, you might want to consider an upgrade to our 1010@45 PSI kits.

 

Fuel pressure at the injection pump should be 17 - 22 psi at idle and of 25 - 35 psi at 2500 rpm (no load).
More is not better.

 

I've got the 150 unit. Will vendors sell just the pump/filter block, or do I need to buy a whole setup? I'd like to keep the filter setup, and not run just a HPFP.