[Dark_5.0]

"Do I unplug the vac hose going from the regulator to the manifold and set it..then plug it back in??"

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Yep unplug the vacuum hose and plug it with your finger while you set it thats what I would do.

You might be making more HP than what I said, I used the Mustangworks analyzer to get those #'S.

But I would think your optimum fuel pressure would be below 40 psi.

Later,