DAEDALUS wrote:The fact that Infiniti measured each one's pattern (not just flow rate), that they kept them in separate bins, and in separate packages, and made sure each car got all the same color would suggest there is some proven value to having them matched. You may not feel the difference any more than you can feel the difference between 274 and 278 horsepower, but if the cost is the same, why the heck wouldn't you replace them with the same color?
In my case I did not exactly match my injectors for my '94 because after ordering and returning multiple injectors from multiple sources while my car was taken apart got tedious. I just used the third injector I ordered. Look at this thread to see the injector pictures:
zerothread?id=108856
The fuel inlets are not in the same place! Maybe the spray pattern is the same, but it sure looks different. I think it is Infiniti reducing the number of different replacement parts they stock for cost savings. All the injectors work close enough to the same for a 100K mile car.