FYI alot of other companies dyno these cars in 5th not just Livernois. As the lion also stated its a 1:1 ratio, like when ppl dynoed the older 5spd 5.0s in 4th because it was also a 1:1 ratio. Also crack kills bud.
I'm with tcman54 mine is better in 3rd and above most of the time. I've noticed that boost doesn't build into upper teens til after 4k. Maybe it's the way it's tuned from the factory but boost seems very limited down low.