250whp LS tegra

My friend is tellin me on my stock integra ls i can get around 250 whp with the rev hard turbo kit running about 8psi. Sounds like alot of whp for 8psi in a stock ls to me?? You guys know what HP gains i would really get from this kit?? i got no exhuast yet..do that after.

The turbo kit with stock exhaust and stock internals and running 8psi should yeild 200 whp, 230whp with an exhaust and 12psi is possible but 250 whp is not likely to happen with 8psi.