water injection to overcome high compression ratio

[Dust]

I think that water injection, especially aquamist, will get your power up. One thing to ask though, is can you put a thicker head gasket on the car? Not saying it's the best idea, but I know that the lexus/toyota people install thicker headgaskets to lower the CR.

The engine, tuned with the water meth, and also failsafed with boost drop, or map change, or whatever you have, should help you with power. How much, I am no expert.