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I pulled a set of injectors from a yard with the intention of sending them out to be cleaned and then replacing mine with the cleaned set while my original set was cleaned. I got them from a naturally aspirated 740, thinking they should be same as the ones on my NA 745. They turned out to be different color (black, mine are yellow) and have different part numbers.
Are the injectors different between the years? Is there a difference between Bosch and Regina cars? What makes them different? Is it the flow rate, or something else?
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