On an average HONDA motor with a basic setup it is around 8-12whp. I have about 40 different cars with dynos to show. On a very well designed setup you can get 15-20whp per pound. This means good flowing heads, big exhaust, effecient turbos, etc. There are many things that can make this go up or down. Examples, Stock GSR at 9psi made 42whp more by just changing from 2.5in exhaust to 3in exhaust and downpipe. This added about 4whp more for each pound of boost. Another example, we did a D16y8 with a T25 turbo and a small 2.25in dp. Car also had stock cat, stock exhaust w/aftermarket muffler. Stock it made 105whp, 9psi boost it made 178whp. This is right at 8whp per pound.

Cliff notes, mainly depends on eff. of setup.

Charles (not Mike)