well i just bought a 01 gmc sierra stock except for cai had hypertech on last truck helped out but been reading tune works alot better been looking between texas speed and nelson i dont know if texas speed does re tunes for free like nelson and would like to know everyones preference want tune now cause its the cheapest mod for the power plan on doing more to the truck later so the re tune sounds good i live about 250 miles from san antonio would it be faster to drive it there and tune it or mail order it? what i am asking can it be done with appointment and done in one day