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minimum effective injector pulse width

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Can any one explain what minimum effective injector p.w is  in MAIN FUEL setup ? is it the p.w at 15 volts  ? or it is some thing else ?


Why do i need to mention it in the MAIN FUEL setup ? i have stock 560 cc/min injectors for jdm evo 8 . What value will be considered as good 1.00 ms 2.00 ms or 3 for a good idle ? i dont have injector calibration data . i noticed that in the older firmware this option was not present. 

Is minimum effective inj pulse width is different for different injectors ? i.e low impedance  and high impedance .  Bigger and smaller injectors ?

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