TMGT
Elite Member
96 was the first year for obd2 requirements and it will provide freeze frame data, some earlier obd1 systems will also provide data although usually more limited. There are also a few vehicles that implimented obd2 prior to 96, (94 and95 Ford PSD is one that comes to mind).Looks like 1995 may be the earliest that they be able to get data from:
Find out if your car is being tracked | One Page | Komando.com
Newer vehicles will provide much more data though.