No one can just send you a tune without at least knowing details of the calibration in the PCM you are using. There is not just one calibration that was used in all 03 Escalades. Details about the operating system you are using and all the other segments in the calibration have to be known by at least posting the bin you are using. And that is just for starters. I'll also add that that cam selection is probably not the the easiest to learn how to tune EFI on. Also stock 25 lb injectors that a 03 6.0L has are going to be too small and can't supply enough fuel at high rpm with that cam.