I don't want to argue, but I used the balance rates to change an injector that had bad rates. I had high rates + 7 or 8 on injector 7, changed it out and it was good after that and still is. So it worked fine for me.

I had tried using the DVT's as well to determine which injector was bad, but that didn't work for me. This is what others found too if I am not mistaken