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Power Strokes
7.3 Aftermarket
Fuel system is done
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[QUOTE="Tree Trimmer, post: 82701, member: 716"] your thinking about someting like this. one pump standard setup, the other pump run off some sort of low pressure switch, when fuel psi drops to, lets say, 50 psi, the second pump turns on. builds pressure to, lets say 65psi, when it would need to trip a high pressure switch, or it would constantly be on like andys set up. so now it trips that hp switch, and its shut off. but your still wot. so its dropping again, now we hit 50 psi, its back on. thats alot of cycling that pump is doin, with some fast pressure fluctuations. your fuel pressure guage would twitch like a crack head coming down. just normal driving, around town, your right, it would prolly rarely turn on. but when it did, it would cycle like a crack head, imo. imo, constantly on, is much better for the pump, that all that cycling. you could leave it with just a lp switch, so when it tripped it would stay on till you turn the key off, but unless you can maintain over your minimum fuel pressure, with the engine off, think it just sat in the garage over night, it will trip as soon as you turn the key on anyways [/QUOTE]
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