i got 15 mpg on the way up from charleston, untuned so i'm not too worried about that, and i'm betting that it will be a little bit better after the tune... i will probably add a trans cooler soon though for peace of mind until i decide if i want to swap the converter or have it re-worked with a lock up clutch... another option would be the 4.2 trailblazer converter... i dont want to go all out on a custom converter just yet until i start planning the big stuff next year
we'll see, but for now, i just want to drive my truck for more than a week and enjoy it
