Smokin,
The numbers are about 60/160 and fuel economy is usually reported back to be gained by about +2. The power is felt with an empty truck, but most of it is felt under a load. It comes into it's own, you would say, towing.
As far as the programming, since it's not out and not even dealers have seen or used it, I have no feedback or numbers for you. I am told 100hp is do-able and more with injectors and such. As far as cost, you are welcome to e-mail me. I refrain from posting costs for two reasons, respect for the site, and I give TDR members a discount and I won't post it for respect of other dealers, even though I don't think there are any on the site.
Bob