Pocketlogger/datalogger?

[Megaman]

can someone please explain to me what the heck this is and what it does? people say it's a good investment
and i heard u need a palm pilot to use one...i have a palm m515, so i guess i'm half way there

 

[44pirate]

www.pocketlogger.com
You can monitor all your sensors. Also log a run of your RPM TIMING and O2. You can reset CEL's. It works best in conjuction with fuel tuning. Pocketlogger only lets you monitor data. SAFC and Pocketlogger plus EGT guage works best in combo for fuel tuning

 

[Ludachris]

You'll need one of the two in order to make real power. It's used to monitor various sensors in order to help you make the proper adjustments for optimum tuning.