A top of what was mentioned by jason, make sure your AFR's are on the nose. I have done a lot of work on turbo srt-4's an I really push the AFR subject wehn they wanted to add more boost, or bigger turbos.
With the stock bottom ends of all modern engine being built with tighter tolerances, you have to be really carefull about beating them up to much with keeping your stock high compression.
One thing you could do is, change the cam that will have a little more over lap. Or get some head gaskets that will lower you comp by a point.
There is much more you can do without going to far in the eingine to make live at the HP level you want.
Jason, you know what it means when this happens right? Now you have an excuss to build something with more power.
