All I can say is go on th www.ebay.com search for PocketDYNO no spaces. This is incredable, if you have a PDA then you can get a Performance tester better then the Gtech Pro by a long shot! The best part is it is an item that costs $49.95, that is all. Having used the Gtech, I know that this is better, you can store multiple, multiple runs. A whole night at the track, and the best part is, you can go home and graph the results something only the Gtech Pro Competition can do. GET THIS!!!! I lov it, ad it will estimate yur 1/4 mile after accelerating 0-60. GET THIS!!!!!!!!

 

If you have a decent PCM scanner your car already has a dyno, it computes delivered torque which the PCM uses for multi purposes.