I have read so many posts on so many different and am more confused than ever. Here is my Delima; I currently have a lifetime powertrain warranty on my truck, that is as long as I get my oil changed at the dealer every 5k miles. When I bought the truck a year and a half ago I bought the edge juice with attitude. I was always nervous about taking it in to get the oil changed with the edge still on so I would unhook it before taking it in. About two oil changes ago, my wife took it in to get the oil changed for me. She called me from the dealership telling me they wanted to know if I had a chip or tuner on it. I told her to play dumb. Turns out they reflashed the computer and wanted to let me know that if I did have a chip/tuner I didn't anymore. Every since then I have been paranoid. My question is; does anyone know 100%I sure if the edge juice with attitude leaves a footprint. Everything I have read is 50/50. The ones that say it doesn't say when you set it back to stock and take it off you have to unhook your batteries which erases all the info that is stored in your factory computer. I have tried to sell the tuner so I wouldn't have to worry about it with no avail. I liked the truck so much better with it on though. The main thing I liked was the gauges. If I put it back on and leave it stock and use it for just the gauges would that work? I really don't want to lose my warranty.