Been tuning Duramax's for year's now with efilive, but recently I picked up a 99 2 door Tahoe with a 5.7l vortec in it. So I'm dipping my feet into gasser efi tuning. Joined up because of the .xdf's for tunerpro hoping to be able to adjust some things efilive doesn't offer. I've got a bit of a learning curve ahead of me transitioning over, hoping I can get some tips, pointers, hopefully access to some more parameters than I currently have, and hopefully 1 day be able to get good enough with gas tuning to help out like I have others with diesel tuning.