OEM injectors are pintle design; good for its time, but there have been many generational iterations of fuel injectors since.
Recently BMW aligned with Bosch to release a direct replacement 14.5lb gen 3 injector that is 4 hole (disc type).
4 hole injectors provide for much better fuel atomization when compared to pintle design; responsiveness and fuel economy should be expected improvements.
BMW OEM PN# 13641731357 (Bosch 62415)
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