Thats BUNK. Autozone doesnt have the knowledge or the capability to do something that even the dealer is unable to do. The only way to do this is to install an aftermarket fuel controller. The Super Chips company sells these products and the do work, but you have to know what to adjust to make the power. It isnt simply a plug it in and go faster kind of thing. And yes if you are still in your basic warranty and you have to go in for warranty service it is recommended that you return the vehicle to the stock configuration beforehand. If the necessary repair can be linked back to the aftermarket component then you will be liable for the cost of the repair as well as the labor for completing the repair.
Good Luck,
Billy
Good Luck,
Billy