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Message: [QUOTE="Hotrodtractor, post: 37357, member: 25"] You have injector opening delay - you have that figured in - but you don't have injector closing delay figured in. 45* of a total injection event is OK at lower RPMs - but at higher RPMs is WAY too much for effective power especially when you figure in the burn rate of diesel fuel. This can be easily seen if you look at the changes and developments being made on the mechanical injection side of the sport with larger diameter plungers and barrels and fast fill cams that are being created not to increase the overall volumetric size of the pump(even though that is a result) but to increase the actual injection rate and allow them to shrink the injection window more. There is a reason that p-pumped motors can sing down the pulling track at 6-7K RPMs one a setup that is built and dialed in perfectly. 5-6K RPMs is common. [/QUOTE]

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