XTREMECONTOUR - couldn't tell you what OBD-I and OBD-II stand for...
I probably shouldn't even murder their definitions but - they're essentially the computer systems in our cars (all fords?), and OBD-II replaced the elder OBD-I a few years back (96?). Mystery mod is :accidentally: removing the material from your light off cats.
red95SE - Find Bicycle019 and see what he says. I know he's mystery modded w/ OBD-I and he got results. I'm not too sure how easy the swap from I to II would be, or if it would even be necessary.
HTH
