Hoping this thread will result in a more detailed answer than the last. I have a Hypertech Max Energy controller for my 07 Suburban 5.3 LTZ. I wonder if anyone out there really knows if the controller will benefit the performance in ways I can feel? Does this controller adjust Air Fuel Management or anything besides shift points that I will be able to feel? Does it do anything at all for fuel mileage or acceleration aside from the shift points and firmness? Thanks.