Im currently upgrading my 08 STi. Current mods are as follows:
- 3" Harmonmotive turbo back exhaust with a cat-less downpipe with a magnaflow muffler.
- Cobb SF Intake combo kit
- Grimmspeed Air/Oil Separator
- DW 65 fuel pump
- Perrin turbo inlet
- Cobb Accessport
-Kartboy Short shifter kit w/bushings

Exterior:
-Plasti dipped hood scoop (temporary)
-Home depot lip (temporary)
-Painted Tail lights
* I was really really bored one day LOL dont hate too much

Its running great but its time to upgrade and get a protune. I just ordered a Blouch 18g-xt turbo, DW 1000cc injectors and a Grimmmspeed EBCS. Ill be installing this and getting a E-85 and 91 octane map for it. Ill be running E-85 as my primrary and the 91 will be for back up. Havent found too many STi's with this turbo and excited to try it out. I read many good things about it. My budget is a little tight and dont plan to get too crazy with power with the stock internals. After this ill be hitting the suspension pretty hard. Ill be coming back here and keep updating this thread for those who are interested in dyno numbers and videos. Here are some of my vids of my progress on my car.