biged3

I know that the SCT Xcalibrator can download the current config. that comes on the car, but I was reading on another forum that even if you do mod it then change it back to the original before taking it into the dealership for warranty work they can tell since every firmware mod is logged in a different part of the ECU memory, so the techs can tell if the car was reflashed. Any body hear about this? Casper98GT can you share any of your knowledge on this?