As someone that's been a consumer in this space for a long time and one that will probably never do a power mod to my QV I want to point out one more thing.
A dyno can be made to demonstrate anything you want. It's not nearly the quantitative test it seems to be. After years in the VW space I realized that a real dyno is about as accurate as a butt dyno. It's great guidance but nothing more. That's not me saying one shouldn't be done for this product. It's me saying it's far from critical.
For me, I agree with this, I have their ECM on my Stelvio and am very pleased with it.