I don't know about Dynos but it definitely does something. Smooths out the shifts, bumps up MPG. Mid-range acceleration is a tiny bit better.
I got this fully expecting to feel absolutely nothing based on what most people have said but the fact is, it noticabley changes the driving feel.
So if you wanna tell me that the horsepower and torque increase is zero, I believe you. But the driving feel absolutely changes/improves, and almost everyone that has driven their truck around for months without it and then had it installed says the same thing.
I get the y'all don't want people thinking this is a true performance part, and that you're gonna see any kind of track gains with it, but the idea that it does absolutely nothing at all to change how the truck feels to drive is misleading.
Could I get this from a Vararam, a K&N, even just a new drop-in filter? Maybe, idk, didn't try any of those. But I know I get it from this, and it was worth every penny to me.