Not to harp on you man, because I know it seems like I do, but the information you are looking for on this "magical GIAC F23T file" has already been given.Honestly Mike, I have asked them. I know there were 2 files released, but I know it's about the fact that the f23 is hundreds of dollars less and even more than their kits they offer. It's really not even so much the tune, as you can use any ko4 file run with an mbc for safety, it's more that they try to steer you to the ko4 or play dumb or just don't get back to you at all. I
I realize this isn't your fault, but you guys do a lot of business with each other. Right now drivermotorsport gets all my tuning business, however, if they were openly selling the ots file then I and many here would consider a switch.