Originally Posted by Fishinadish
I wanted a little more oomph in my wrx, so i just went with headers, new up pipe, and a tbe and wow what a difference that made, and it was only 35+hp under ideal circumstances. I can't imagine what going from ~165 whp to 400whp would be like....what does one do with all that power?
They DIAF when they slide into a ditch at 145 MPH
I enjoy my car now at approx. 300 WHp much more than I did when it was stock at around 250 (same dyno.) The real difference wasn't the amount of power, but the way the power was made. A smooth pull, with a wide powerband, and no more funky '07 STI throttle and hesitation issues. 400 WHp would be nice, but only if it stayed as drivable as it is now, which I doubt it would. Needless to say, having the car outlast the car payments is a goal of mine as well.
If I really wanted a 400 WHp monster, I'd have started from scratch with an abused and used '04-'05 STI with a blown block and built it with power in mind, rather than screw up my expensive daily driver.