hey ive got a bone stock 2006 duramax....i have heard mixed reviews about the out of the box programmers and chips and what not....i am not sure if i wanna commit to an efi live because i am very confused on how to use it and if it will damage my truck. what i am thinking of doing is getting the transgo jr shift kit to protect my allison transmission and the ppe xcelerator hot...i want good safe power for towing and jsut cruising and a good amount of smoke when necesarry. my main question is basically simply in steps how do i go about efi and if i go with that should i do anything else to my tranny?......whats the deal with buying tunes?.....or do i have to make my own?