Save a few more bucks and get some real tuning software. The Predator is good enough if you know someone with ChipMaster Revolution (which does all the same things as HPTuners, EFILive, LS1Edit, etc.). But, the number of places around with access to that software for our cars are few and far between. There's one here in Michigan (1BadLS1 aka Hardcore Racing) and the only other one I know of is in Alabama (RWTD). If you're a relatively educated person (graduated h.s.) and have the patience to learn something new, give the software side a try. It's hard to get over your head with all of the support of the members on this board as well as others (
www.efilive.com &
www.hptuners.com). That way, you can be ready for those heads, cam, and whatever else is in store for your car. JMO.