I would think that the shyte cooling efficiency (especially on a dyno) and flow rate of the stock unit would have a rather large impact on top end figure?
The power your putting out is basically what a stock 2.0L with a VF39,pink injectors,TBE and stock TMIC puts out. I agree with psinuse about the heads. A somewhat easy fix is to slap in a set of used STI cams. They are cheap and plentiful but you do have to block off the AVCS holes. Tap and set screws work.
I would agree with dumdum and psinuse. I'm going to be running a Dom 3.0XTR soon. Will be getting a FMIC after my pistons get broke in. But...I will have: head work, cams, built bottem end, and many many other small upgrades. I would say the Dom 3.0 series is not a turbo for TMIC use.
378awhp/373wtq Custom Dom 3 & CBRD tuned 2006 STI.
"When in doubt...flat out" - Colin McRae