Has anyone heard of or had experience with one of these things. It can measure all sorts of things by the g-forces created by your car. I dont know the actual price about $200 but they are on ebay for much cheaper. I did a bit of research on the net about people that have used them and they say that they really are quite accurate. Within 0.2 of a second and within 5-8hp at the wheels.

Just wondering what you all rekon. Its got me interested. I'd pay $50 for one. I'd like to experiment with it and find out its accuracy.

Here's the link to the main site. G-tech