the code was for a P1000 im guessing. thats something that MIL eliminators do nt control. the P1000 code tells anyone reading codes that the computer was recently reset. you have to do a complete drive cycle in order to turn off the P1000. usually driving it for a week will accomplish that. if you had left the MIL eliminators on, you would have failed visual portion of the inspection.
ya but in CA we actually do a visual inspection. i know in my shop and in other shops where people i know work at they do a full visual and when cars like mustangs come in they know exactly what to look for. even a lot of my import owning friends who are smog techs knows what to look for on mustangs.