Lmm with tunes from Danville

[Matholland618]

I just recently bought a 2007.5 duramax. It has a 5 position switch with a efi tunes. I have no idea what tune is what on the switch. I would also like to potentially edit one of the tunes so that it will hiss at idle. I got no tuner or anything with it. What would I need to accomplish this. I have hp tuners but I don

[Duramaxdummy]

im new to this so bare with me if im incorrect. you first need permission to use the file from danville. secondly in order to make changes to the file you need to have V8 software installed as well as a Flashscan V2. as well as a license. im still learning myself but if you contact Danville they should be more than happy to assist you with your needs as well as provide insight as to which step you should take next. honesty is key just explain to them what you just explained to us. hope this helps.