Has anyone tried using atap/EFIlive to calculate:
- 0 to 60mph time
- 60' time
- 1/8 mile time
- 1/4 mile time

I recently started messing with EFILive and was thinking about this. Since you can export all of your data to Excel, why not log your car from a stopped position and launch it and gun it for about 15-20 seconds, on a flat road. Then export your data into excel. Since you'll have the time and velocity numbers, you can find the 0-60 time simply by looking at how long it took you to get to 60mph. Then by using the formula
Velocity = Distance/Time
or
Distance = Velocity * Time

You can calculate 60', 1/8, 1/4 mile times by doing some trial-error calculations.

Let me know if anyone has tried this out. I'm going to try it out this weekend morning and see if the results are reasonable. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

 

You don't even need to export to excel, you could just use calculated PIDs to create your own.

Here's how to create a calculated PID for distance travelled in meters. It assumes {SAE.J1979.VSS} is currently displayed in km/h.

integral( {SAE.J1979.VSS} , 1) / 3.6

Note: because integral() is considered to be an aggregate function - i.e. its calculation is evaluated over the entire logged data range - it cannot be displayed in the charts. It will only be displayed in the F7 tab page. And will only be calculated once logging or playback is complete.

Here's how to calculate acceleration in meters per second squared. It also assumes {SAE.J1979.VSS} is currently displayed in km/h.

dx( {SAE.J1979.VSS} , 4) / 3.6

The value "4" in the equation is the number of frames over which to calculate the acceleration.

See the documentation here for more info on calculated PIDs and built in functions.
http://www.starrperformance.com.au/e....htm#Functions

Someone smarter than me will have to convert these calculations for miles and feet.

Regards
Paul

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by SnakeStomper:
<strong>you can find the 0-60 time simply by looking at how long it took you to get to 60mph</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Actually by highlighting sections of the charted data you can instantly "see" your 0-60 times like this:
<img src="http://www.blacky.co.nz/free/efilivev5_0-100.gif" alt=" - " />

Regards
Paul

 

This is totally cool. Thanks for the feedback. I can use this instead of buying a tool like G-tech in order to get most of the same info. and save some $$$ <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

Thanks for the screen shot too.