extending downwardly from the upper supply chamber 38 and inwardly at an angle toward the longitudinal axis 15 of plunger 12 and a second angled passage 48 50 connected with the first angled passage 44 46 respectively and extending outwardly and downwardly to connect with the lower supply chamber 24 in this first exemplary embodiment the second angled passages 48 50 form the orifices 40 42 and the passages and orifices are all positioned in a common plane extending through the injector axis alternatively the orifices may be formed along passages 48 50 in another exemplary embodiment shown in fig4 a and 4 b each flow passage is formed by a single linear passage 52 54 extending through the upper guide 22 and having a central axis 56 positioned in a plane parallel to the longitudinal axis 15 of plunger 12 passages 52 54 are positioned at an angle from the plunger axis 15 to connect the upper supply chamber 38 to the lower supply chamber 24 in the exemplary embodiments lower supply chamber 24 is sized and positioned to provide an increased volume downstream of the gain orifices 40 42 compared to conventional injectors an unexpected benefit of the plunger 12 and injector 10 is improved shot to shot eoi end of injection variation resulting from the improved guiding and alignment another unexpected benefit of this design is a faster injection rate at the start of injection due to more volume downstream of the gain orifices 40 42 larger lower supply chamber 24 in addition to the improved guiding and alignment of the plunger 12 this benefit may also be due to less pressure reduction downstream of.