I would like to hear if any of the performance boxes enhance the fuel economy. I have a 99 Ram 2500 with 4:10 rears and 185 BFG's and will probably go to 305 or 315 tires the next time I need tires. I am looking to enhance the fuel ecenomy of my everyday ride. I have been reading about the Hypertech programer, the superchip programer, the akin box, and the edge juice with the attitude which won't be on the market till Jan. 06, and would like to hear views and words of wisdom on the aspects of fuel economy with any like products. With the current price of fuel and the fact that I would like to purchace a mega cab in the future, I'm looking for a way to economicily enhance my fuel milage. Thanks, Brad