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Power Strokes
6.4 Aftermarket
Low Fuel Pressure
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[QUOTE="Jeff@Spartan, post: 417349, member: 223"] The new flash raises the fuel rail pressure high limit from 25,000 to 27,000 psi. I assume that this new parameter is only going to be valid with the stock file loaded. It's not going to be there once a tune is loaded. My personal opinion is that Ford is doing this so they can avoid replacing pumps until the pump completely goes. Makes diagnosis easier and they don't have to replace as many pumps that are still under warranty. [/QUOTE]
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