My bad. So far, as far as I'm concerned my car "looks" stock except the newly discovered FP turbo and the K&N drop in filter. Gotta go investigate some more to see if the injectors and fuel pump have been modified also.
I guess this is a lesson learned for not probing around more under my hood. I've never driven any other STi's, but have driven other cars of this caliber or faster, and I thought my car was ridiculously fast for some reason, but I found a good deal on a AP so I thought why not. So this ultimately means I flashed over a perfectly well tuned ECU. Bummer