So dad bought a 2011 lml and on the first drive after getting it home the check engine light, emission light, and see dealer message all came on. Setting egr code, can't remember the code now. So we had plans of removing all the crap on it and do my own tuning so no big deal went to pull the file out and learned it ain't that easy. So after researching I found out why and what needed done and a few hours later I found terminators link to his truck stop post and found a good base file that had all matching os. So after looking through the file I don't see the option to turn off dtcs. I found most of what I think I need just no dtc. Any advice on where to find them, or is that step not needed. Thanks for the help guys