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Message: [QUOTE="golfer, post: 365258, member: 266"] the poppet valves have no contact with the fuel... even high ICP pressure can't 'hurt' the poppet..it's just prolongs the refill time of the injector..which degrades performance at high rpm...of large(r) fuel injectors. I can't fathom any reason that changing fuel pressure from 30psi (at idle) to 100psi (at idle) would change how the truck runs (at idle)... once the rpm comes up...the higher(ish) pressure can benefit injector refill...since there's less time to refill between injs events the higher the engine rpm. [/QUOTE]

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