I go by what my tester have told me about their mileage gain. The the ones running the turbo and a custom performance tunes have noticed hand calulated 4-8 miles per gallon gains over there stock turbo with same tune. I have a guy that hauls everyday and with a stock factory tune and stage 1 turbo he is getting 1 mile per gallon with full loads 24000lbs. that's DOT calulations. I don't understand the big deal, the mileage gain would happen even with a powermax over the stock turbo. Like I stated before it's the added air that increases the mileage, never said it just my turbos, it is anyones turbo that increases air over stock. I didn't start this thread, and anyone that runs one of the turbos I build can do whatever they would like with it. If some one with a powermax would have stated mileage increase, would be would it be so hard to accept it.
I will not battle anymore on here about how on what the numbers, with time and more people running the turbos I build, all the numbers will come out and still if you want to beleive do if not just let the info get out to the other members. If some one tries a turbo and comes back and says it didnt work as everone else has said then go ahead by all means and burn me.