09-22-2004, 11:45 AM
OBD-I - you dont need an expensive scan tool to read the codes, sometimes OBD-II ecu's are picky and dont respond to mods as well as an OBD-I ECU, and generally more emissions crap. Although in some places with OBD-II you dont even need a sniff test for emissions, just check the ECU codes and you're done.