Ebay GT45 + 5.9 Magnum + E85 blow thru

subcom said
I'm still dropping pressure. I'm stumped. Maybe my Aeromotive boost ref regulator? I'll try a diff battery also.

What about the filter between the sump and the pump?

Where's the boost ref line connected?
Is there anything connected with it? such as Boost controller?

Can you manually force the regulator to say 60-70psi and have it hold? or did you do that already?