[ArthurJGuy]

It is my understanding that the OEM fuel pressure regulator on some early hummers has a vacuum line attached to it.

One would assume this is used to alter fuel pressure in a boost referenced setup.

I am trying to find the rise ratio of this regulator. Does anyone know this information?

If not, can anyone tell me your fuel pressure at idle and at boost (along with how much boost you see)

Thanks