I raced an 04 STI a few times.
06 TR: catless Downpipe, intake snorkus removal, 2 kicker comp VR 12"s in a MDF box in the trunk, removed spare tire.
STi: intake, catback, I think it had a BOV (unless the STi one is audible stock), 2 people in the car, 19" rims which he said he could feel making his car slower..
We ran from a 20mph roll a few times, I was in first.
He would pull about 2 feet in each gear, until we got up to 3rd. By 110 he pulled one car length on me. We repeated this a couple times, same result each time.
I was impezz'd with my cars performance. I'm really itching to go Cobb stage 2 now, because I want to beat this guy, and get back up to my friends SRT-4's level.