how much fuel pressure to run under 6.5 lbs of boost?

[vinniepearl]

I'm running 6.5 lbs with 42lb injectors. I need to know what to set my fuel pressure regulator to. I have it set at 39 psi with the vacuum unplugged currently.

 

[NXcoupe]

40 lbs, that's what the injectors are flowed at.

 

[MustangBrad94gt]

Hey Vinnie, did you get your boost-brothers kit on yet, still havent installed mine yet, Ive got all the stuff to install, havent had time yet, how is yours doing, ive got the tm40, wondering how its gonna do