I have been thinking about replacing the injectors for some time. I am not sure what I will use, still researching, it's a tough decision. Is there any difference in a good rebuilt set vs a new set? I have been told that with new, the springs change as they break in, resulting in different pop off pressures. True or not? Any disavantages or advantages with either set, other than cost?

 

I know here, the cost of rebuilt injectors is almost the same as buying new ones.

 

An injector rebuilt with a new nozzle is every bit as good as new, a used injectors spring has already taken a "set", and if rebuilt with a new nozzle and set 5 bar above spec will be every bit as good or better than brand new

 

I agree. All the wearable parts get replaced and the new tips make all the difference in the world.