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Mustang Forums
2015+ S550 Mustangs
5.0L Coyote V8 Engine Modification/Discussion
S550 Fuel Pumps and Aftermarket Choices
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<blockquote data-quote="Shaun@AED" data-source="post: 15607056" data-attributes="member: 32381"><p>Yes they are, and the FPDM's cut voltage down in half under normal driving. The pumps only run 100% voltage at WOT. This is why this kit is superior to all others, the pumps don't run 100% voltage all the time so the don't wear out. Large pumps like these will wear out much quicker when run at 100% voltage full time.</p><p></p><p>This kit also does not use a hobbs switch, so no boost/vacuum leak will cause the 2nd/3rd pump to not turn on which can cause a dangerous lean out at WOT. Both pumps are running 1/2 voltage until WOT where they BOTH are triggered by the Factory ECU to run full voltage. OE trigger, OE pumps, OE quality.</p></blockquote><p></p>
[QUOTE="Shaun@AED, post: 15607056, member: 32381"] Yes they are, and the FPDM's cut voltage down in half under normal driving. The pumps only run 100% voltage at WOT. This is why this kit is superior to all others, the pumps don't run 100% voltage all the time so the don't wear out. Large pumps like these will wear out much quicker when run at 100% voltage full time. This kit also does not use a hobbs switch, so no boost/vacuum leak will cause the 2nd/3rd pump to not turn on which can cause a dangerous lean out at WOT. Both pumps are running 1/2 voltage until WOT where they BOTH are triggered by the Factory ECU to run full voltage. OE trigger, OE pumps, OE quality. [/QUOTE]
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5.0L Coyote V8 Engine Modification/Discussion
S550 Fuel Pumps and Aftermarket Choices
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