How could you even understand that first post?!

Good dynos...thats about what youre looking at. And headwork on LS turbo setups can yeild some VERY impressive results. A buddy was making 252/228 @ 8PSI with his stock B18B w/good headwork.

The 2stage manifold does exactly what it does for NA...increases midrange. Take the 2stage out and youll see a midrange loss and peak gain.