I have an 05 with an edge chip, banks exhaust and a AFE intake. in the last week when getting on the fuel it powers up as usual but when i let off the pedal I loose power. Most of the time it will loose power and run consistant at about 60 falling off from 80-85 mph. And, in a few occasions i loose all power and have to pull of the road. Now when I am pulled over and turn off the key for a few minutes it then starts and runs fine. I am trying to find out if it is a chip caused problem or a motor problem. The shop that installed the chip thinks that if is a fuel rail problem and I am just trying to get other opinions before I pull off the chip. Thanks for any advise

sounds lke "limping"... do a search on that and see if anything rings a bell. what level are you running the Edge on? If its too high you may be limping the tranny. If you do not have the latest updates for your pcm on the truck then putting the edge on might limp the motor.

I may be totally wrong, but try searching for tranny/motor limping.

good luck

excuse my ignorance but I am assuming that the dealer is the only one that can update. So I need to pull the chip. thanks again

Yes, if the updates is what you need.