Not sure, with exhaust, intake, and FMIC, maybe 15-20hp. Its hard to say. But i have the supporting mods for a Unichip, then you can safely turn up the boost. Then the fun begins!!
The Unichip is the Plug and play Engine management system. Its about 800.00 but you are able to turn the boost up to 10 psi without any worrys. Very easy to install. Just search for unichip and you can read more about it.
The exhaust is not THAT load, it sounds really good. The guys that have seen my car all think it has a great sound. I guess thats thanks to the 300 dollar carbon fiber muffler. I'm not a fan of the angry hornet sound myself, and this just sounds aggresive. Let me know if you have any other questions.
I think the UNIchip come's with 2 maps. Call and tell them what you have done and they can take the rest from there. I like the exhaust sound of the car it's way better then the Corksport one that I have on mine. I had to put a stock MSP muffler back on (Thanks Kris).
Yesterday i had some people ask how much for it when i was driving home, and they said that they would call me. Oh and i thought it was sold for sure, since one of the emails sounded really interested. Then i found out it was one of the older guys i work with playing a joke on me. What a Dick!!