Hi. I'm installing a 650 AVS Edelbrock carb to a Holley red electric fuel pump. The Holley pump is factory set to not exceed 7psig. I've heard that they typically only run 4-5 psig with out a regulator. Can anyone comment that has currently or had a red pump without regulator. I want to know whether I need to install a regulator with the new Edelbrock. The edelbrocks are good for 4 to 5.5psig without problems. Any higher may lead to passing needles from what I read. Thanks in advance.