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Not sure about on diesels but on an LS the computer has a calibration for the size of the injectors. It has one entry for all the injectors, not one per cylinder. So You can't put a random injector in one cylinder and expect it to fire right because the computer is calculating pulse width based on the specs for all the other injectors. Little injectors will open for more time on the same engine as big injectors would. So if the computer thinks it has a 90hp injector and it really has a 30 its not going to inject enough fuel on the one cylinder which could cause a misfire. Conversely, if it has all 30hp injectors and one 90hp it will inject too much fuel on the one cylinder and also cause a misfire. (Or worse.)Not sure if its the same on a diesel but I do know the '06 is computer controlled and therefore probably does have an injector table that has probably been modified for 90hp injectors if that's what was in every other cylinder.
Not sure about on diesels but on an LS the computer has a calibration for the size of the injectors. It has one entry for all the injectors, not one per cylinder. So You can't put a random injector in one cylinder and expect it to fire right because the computer is calculating pulse width based on the specs for all the other injectors. Little injectors will open for more time on the same engine as big injectors would. So if the computer thinks it has a 90hp injector and it really has a 30 its not going to inject enough fuel on the one cylinder which could cause a misfire. Conversely, if it has all 30hp injectors and one 90hp it will inject too much fuel on the one cylinder and also cause a misfire. (Or worse.)
Not sure if its the same on a diesel but I do know the '06 is computer controlled and therefore probably does have an injector table that has probably been modified for 90hp injectors if that's what was in every other cylinder.