I would like to hear from people that have done this mod to their 5.2 or 5.9 magnum engine. What did you find afterwards as far as power, mileage, etc.

 

Doesn't do anything noticeable. The engine may be a bit smoother, simply because the new injectors are better balanced.... but, I've seen too many folks have issues, because the injectors aren't sized properly. They might be *close*, but, that ain't always good enough. Everyone rates their injectors differently..... there doesn't seem to be a standard. If your stock injectors are still working properly, in my view, they simply aren't worth what you spend on them.