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Message: [QUOTE="Hotrodtractor, post: 1003919, member: 25"] Injectors are mechanical systems that must abide by the laws of physics. If you want greater control resolution in a particular area you must "flatten" out that particular area on a flow map. Take these 238 hybrids from testing way back in the day.... probably 5 years ago now: [ATTACH=full]136563[/ATTACH] Now we apply some modifications that allow them to inject fuel faster - ie a higher injection flow rate allowing for them to climb higher in the RPM band. [ATTACH=full]136564[/ATTACH] Notice how the flow rate increased pretty healthily during "normal" idle parameters? This high flow rate is what causes a bad idle that is sometimes associated with large injectors. There just is not enough resolution at those low ICP figures to be able to control the flow rate fine enough to smooth out the idle. By doing some changes you can end up with something more like this: [ATTACH=full]136565[/ATTACH] Notice now the area of the map where you would associate with idle and low throttle situations has a decidedly lower flow rate with only marginally effecting the areas of max flow. These changes essentially resist flow at lower ICP numbers that allow you to have greater control. There are a multitude of things that can get this desired effect - this graph was generated with just a couple of minor changes, some of it off the shelf, and some of it uniquely custom from my bag of tricks. Further testing would be required to get the right balance of control resolution and fuel flow. [/QUOTE]

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