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Well if I never encountered a low fuel pressure situation, why should I kick on the second pump?
Fuel system volume is not changing, so if fuel pressure is constant without dropping, why the need for the second pump to kick on. I assume its to make sure that when you elevate into higher boost levels you are already making the added fuel flow for when the motor guzzles more down.
Assuming thats a correct analysis, I guess the hobbs switch gives you more of a cushion of time for pump to kick on than a fuel pressure switch, which would be as soon as the motor demands more.
But, you are right, a calvin switch is prob the best.
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Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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