i am running software similar that does something similar to a gtech, except that it works through the obd2 port.

it is looking for a lot of info i don't know. maybe you guys might be able to fill me in.

curb weight: got that. 3450 for my porky pig. just had it corner balanced this weekend.

gear ratio: looks for a number from 1 - 20
drag coef: in cw's
frontal area: in square feet
tire circumferance: in inches. i am running 19's

gear ratio variables

working gear: a number : 1

rear end ration: a number : 1

the software is the autoenginuity software package with the speedtracer application. good stuff. for those that bought it in the group buy, fyi. you can't be a ***** with the port you really got to hold the back and wedge that guy in there. it's snug. you'll know when you get it. you can hear a slight click. tech support said it should loosen up some after a while. i may just leave mine plugged in for a while to open it up a bit.

any help on those numbers would be appreciated. thanks.

 

Gear Ratios...
1st - 3.8
2nd - 2.2
3rd - 1.5
4th - 1.2
5th - 1.0
6th .8

Rear End 3.44