I've got EFILive, read the tuning and scan tool manuals, just basic operations of the systems IMO. So i went on line looking for "advanced" reading material. And the reviews are very conflicting. Could some of you old salt's recomend a book, dvd, video's that will get me a good start on LS1 ECU's. Ive been going onto this forum, picking a section and reading all of the posts. That is getting a lot confusing since I really don't have a good grasp of the software as of yet. Thank you for your advice.