I tried datalogging a rallycross car with my Android phone the past weekend (because SD card logging didn't work, see thread :
http://www.vemssupport.com/forum/index.php?topic=2470). I got about 20 separate triggerlog files during the 30 minutes I had the phone in the car, effective engine running time was maybe 10 minutes. None of the files contained the actual race, mostly idle and slight revving and warming the tires.
Latest june release of VemsDisplay and firmware 1.2.31 in the ECU.
I will require more testing to make an effective test of this, but so far I did not get what I needed.
Anyone else care to share their experience?