Anyone have any feedback on the SCT Livewire tuner for a 2006 6.0 powerstroke from morepowertuning.com? Found one from them on ebay that comes with a thermocouple for egt and gives you a form to fill out for them to write you 3 custom tunes according to existing exhaust/intake mods. They advertise 3 custom tunes in addition to the 3 that the SCT Livewire already comes with. I'm just wondering if anyone has had any bad/good luck with this tuner, I don't wanna blow the heads off my truck! Any information would be great before I spend nearly $600.