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Originally Posted by Psycho  Based on what I have read CRDi engines tend to use a high pressure fuel pump and use a common rail to pump in fuel to the injectors at extremely high pressures. The injectors are fired multiple times to get the desired quantity of fuel into the cylinder this is what I am assuming is a limiting factor to the additional quantity of fuel going into the system.(I may be wrong here please educate me if I am.)
As far as the add on modules that you get tend to increase fuel pressure and also some units tend to increase the injection pulse duration to increase the power output of the engine. |
If we increase the size of the fuel injectors, then the pressure with which they inject the fuel will decrease, because of the increased area, right? So even the fuel pump needs to be tweaked I guess.