Fuels94TA

I was looking at my issue of Hot Rod and at the back they were showing this little device that will show you a dyno type run on your car. It will hold about 40 test on it and then you can download it onto you PC and review it. I guess this is good if your adding things or running at the track to see if your improving as you go? Is this the same as the g-tech pro? Does anybody have inputs about this or has one? http://www.mrdyno.com/

Vinny