On the cummins truck from what I was told yes same truck, same day no other mods, same dyno etc.... From all the testing MPD has done with the 6.0 wheel they have seen great results I think the have some posted on their section
Obviously in the performance world there's tons of "snake oil" and do I have any proof it will work great on a 7.3? I have no F'n clue lol of course since I'm buying one I sure want it to... All I really have is a lot of people I see making big numbers using them so I figured I have wasted money on a lot worse things.... Depending on how soon I can get it and where I am at waiting on other parts I'm going to have bill dyno my truck with just changing the wheel since I already know what it makes on his dyno with the current mods. Because I will have no idea as to how much I gain from it once all the other parts go on