Go check out the video.
Import Faceoff 4/29/12 - YouTube
Here's is the video of a 600hp 04 STi at Import Faceoff. He placed 2nd in the FIS class with a time of 9.956 in the 1/4 making him the fastest daily driven STi in Texas. (and possibly the only running 9 second Subaru in Texas at this time). And before you ask, no he's not on slicks. He drives the car to the track and races on the same tires that he drives on the streets. He does actually drive it everyday to work (aka the shop) and he has full interior and AC still.
This is from my tuners facebook page.