Fuel Pressure Regulator Required?

Mcfarlrm said
Currently running a Holley Red Electric fuel pump that runs at 7psi. Holley says a fuel pressure regulator is not required with this pump. However, my Edelbrock AVS2 states no more than 6.5psi. Am I safe without one or should I install a regulator?

I would. You will have plenty of fuel with that pump but 4.5# would be plenty of pressure. No reason to run it on the jagged edge.