I don't like the idea of running mine all the time. I put a switch for the pump in line with the pump and the switched side of the ignition. This way, it will only run with the key on, AND the switch engaged. Run it when you need it.
It hasn't restricted fuel flow.
I operate my car in TX, FL, and GA and have not had vapor lock problems. I thought I did, but such was not the case. I doubt that is your problem, particularly this early in the year. If it IS, it's probably because your fuel line is run incorrectly between the pump and your tank, and sits too close to the exhaust at some point.
Any other symptoms you can describe?
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