When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I use EFI Flashscan and it is great, but be aware the learning curve is steep with any full tuning software because there are so many variables and tuning is really an art.
EFILive has their own cable now- you don't need to purchase Autocrap.
There is an excellent new Tutorial for EFILive-FlashScan users.
The EFILive forum offers a lot of help and info. LS1Tech.com has a PCM and Diagnostics section that is actively followed by many members - an excellent source of info.
The scan and tune section (here) has many well-versed, knowledgable tuning enthusiasts.
EFILive is definitely worth it if want to learn to "tune".