Just for fun, I datalogged a WOT run to about 120 MPH, and loaded the MPH data into OpenOffice calc (microsoft excel, but free).

I used a couple equations to calculate ET, "Miles per Second," Miles travelled, and Feet travelled per datalog sample from the datalog, and then added them all up to find total distance.
I don't know if Excel is capable of doing integration, that might make it a little easier.

Here's what I got:

15.8 @ 98 mph, and a 3.4sec 60ft.

Not bad, considering my wheels didn't stop spinning until 6 seconds into the run, and my "track" was uphill . Also AFR was at about 14:1.

Of course, there are some flaws:
Indicated speed is not actual speed (tire diameter varies with speed and tire wear in my case, and the VSS isn't very precisely calibrated)
The wheelspin off the line skews the distance travelled calc.
And prolly a couple other little issues that have slipped my mind.

I'll upload the spreadsheet file later so everyone can try it!

 

I believe DataMaster has that feature built in. It also has a dyno feature too.

 

If you have an iPhone,iPod Touch, or an android phone with a decent 3 axis accelerometer then you should check out Dynolicious or another pocket dyno application. They are a pretty good, and becuase they don't use ground speed to measure distance, only acceleration forces wheel spin doesn't affect them much.

See this video for a G-tech, drag strip, and iPhone test. http://www.youtube.com/watch?v=0-DFbJQbeSY

 

I've never been able to get datamaster working right. I do have an iPhone though. I never thought those apps could be very accurate.

 

I have the "Dynolicious" and it's pretty accurate as long as there's no change in grade on the road you're testing on and the phone/ipod does not move inside the car.

 

True, the phone has to be secured, any movement at all will screw with the results. Also the road should be flat and level (as a dragstrip would be).

 

Are you using the correct version of datamaster? There are different versions for the different ECM/PCMs.

 

I've never put much effort into getting datamaster to work, since I could do everything I wanted in Tunerpro. I'm prolly gonna buy the dynolicious app tho.