Test was performed using proper safety equipment under a controlled road course. Cars were used under the consent of the owners at their own risk through a signed contract.
Hey! this a test i've recently conducted. Just a little run to see how a 2011sti compared acceleration-wise against a stageII wrx with ewg+cai.
Started at the bottom of my second gear. My car(wrx) jumped way ahead of him through that gear making it feel as if he didn't gun it making me step on the brakes. (I wanted a fair comparison) I saw him comming and gunned in through 2nd again.
I caught up a bit through 3rd and we were dead even all through that gear.
Didn't bother going through 4th.
In conclusion,i the TD-04 and longer gears of my wrx seems to have an edge at lower speeds over the new sti.
Through pulls starting at around 35mph the wrx jumps a full 1/2 car length ahead of the STI. After which the td-04 just doesn't have enough grunt to keep pulling away.
With better tires + sway bars and a quick responsive TD-04 the wrx can be a fun autocross car.
That's not to say the 2011 STI with the same modifications won't be faster/quieter/more luxurious/more agile. I've been inside it and it's damn nice.
But i've put down too many hours cleaning, modding, and driving my '07wrx to give it up for some random STI.