I have a 2003 WRX. I bought it it at 98k miles, completely stock. Went stage 2 around 128k with an AccessPort and got it protuned shortly there after. Currently the only mods on the car is the 3'' catless turboback and a catless uppipe -- everything else is stock. I was planning on keeping it that way forever as the car is my daily driver and it has 158k on it right now.
I was talking to my mechanic (lots and lots of Subaru experience, been working with them for 16 years, had a pretty insane LGT that he just sold, building a bugeye up now) about how I would like to go for a bigger turbo but was wary of pushing the power too much. He said that I shouldn't have any problems going up to a stock STi turbo (with supporting mods).
I like the idea, but I'm still just a bit wary. I drive a lot and tend to put a lot of miles on my car (put about 60k on it in the last 2.5 years), but I'm mostly a pretty mellow driver. I don't launch it, don't slam the gears around, generally baby it - though I do like to give a good hard pull up to the speed limit every now and again. Probably the worst that I do to it is slide around empty ski resort parking lots every now and again.
Anyways, I know there are some people on this forum that are pushing pretty big power (relatively) at pretty high mileage. Anyone have any thoughts as to whether this would make my car into a ticking time bomb?