Originally Posted by zip439

RennTech may be able to give you what you want. They have dealers scattered across the country. You purchase a device that attaches to the data port, go to their dealer and get the tune you want. You can go back to stock at anytime and switch back to the tuned mod as well. Have no idea on the price, but it seems to match the criteria you are looking for. Just google Renn Tech in Florida: You will find them.