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Message: [QUOTE="oldschool, post: 953479, member: 1457"] ok, that's what I was wanting to know, cause if you double the size of the hole in the nozzle, it would have to effect the spray pattern. I'm trying to get it in my head how increasing flow by oversizing the holes in the nozzles won't effect the spray pattern or atomization. So then the size increase of the nozzle along with injection pressure increase, maintains the proper spray pattern, Right? So the larger the nozzle is, you have to increase injection pressure, flow and, or increase pulse width. That's the reason of changing intensifier piston diameter to keep injection pressure up, with relativity the same amount of flow. Then with the bigger flow injectors, the pulse width is longer, so the need for dual HPOP, to keep up with the flow, at increased pressure and pulse width. Also with tunes then' is the injection timing advanced a little to help get the fuel in at the proper time? Is that just about right? Just trying to get this clear in my head. [/QUOTE]

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