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Message: [QUOTE="Tom S, post: 143885, member: 623"] Think of it this way the HPOP is putting out X amount of oil under pressure. The oil leaving the pump can flow through the injectors or through the IPR. Like a fork in the road. The way the pressure is controled is via the IPR. The work the pump is doing same at a given PSI/RPM. The IPR duty cycle is a measure of how much oil is being bleed off not how hard the pump is working. It is a measure of how much reserve the pump has essentially. [/QUOTE]

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