i had a sct x3 tuner pretty much given to me for a 6.4 i have to have it unlocked by sct. i know its not the off road or competition tuner, but when i was playing with it it says "lvl *** off" so my question is has someone already had custom tuning done on it? i also have egr ****** how do i turn that off as well if it doesnt give me the option?