I notice when they do dyno tests on a lot of the products on powerblock, they won't do just one mod, they do it with several mods, so you see a little larger number. Like a hypertech is always used with some headers and full exhaust, and a cai is always used with a hypertech, etc... And I was wondering where the guy found those 3 valve ls heads, lol. Must be the guy on ebay that has the big 4 valve heads.