obdii data logging

[00dc2]

does anyone know of something i can connect to my cars obdii port so it can log the speed/revs/throttle etc etc while i drive... and store it to memory like flash then later i can connect it to my computer and download the data?

i want it for my track day...

[lovesil]

Scan Gauge 2 is able to read OBDII data....but not sure if it can record it....