I think he is focusing on what what the pumps can supply and how they interact with the regulator.
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I prob shouldn't answer for Dwayne though.
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I wonder if Mallory has some flow graphs at different pressures. I do have a little bit of Mallory tech liturature from 15-20 years ago. If the pump you have was also made back then, I can take a look.
Just to look at how presure and flow relate with a typical electric pump, here's a couple graphs from the 2014 Holley catalog.
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