Have you guys seen this!! I just downloaded it and haven't tried it out yet, but it seems to work and is getting good results for folks. I heck of a lot cheaper than the other products like it. One more reason to get an iPhone 3G DetlaV!!!

http://www.dynolicious.com/http://www.dynolicious.com/

http://www.autoblog.com/2008/07/29/dynolicious-turns-iphone-into-cheap-performance-meter/

Videos 

http://videos.streetfire.net/video/i...Pro_174609.htm

http://videos.streetfire.net/video/i...deo_174587.htm

so howd it work, I'm waiting on your feedback before I download mine ;)

Got some friends who have tried it, and they actually say it is more accurate than a G-tech, provided you mount it well.