Danny and I took both out the other night just for fun. We ran them from like a 20 roll to about 80-90, don't remember where I shut off at, E55 spins in the first second or two, since it was a 20 roll haha. Slow car beats the slower car.
E55 vs. 996 turbo soon, anyone else is welcome to play too.
http://www.youtube.com/watch?v=flJWb-ELDMY
EDIT, added some cool car pictures from a go-mart meet the other night to make this thread
more awesome. I have these pics in high-def if you want them as a wall-paper.