guys I own an emissions station.

If you have a normal OBDI 95 and older car. They just use the tail pipe. If you have an OBDII car with an OBDII computer we use a cord to tak to your computer. We will still do the test even if the light is on. If the light is on, will not pass. If the light is off and you disconnected the battery that day or the day before, will not pass. Now, if you have a 96+ OBDII car w/ an OBDI computer, you will not pass emissions. There is no way to test this car. Hopefully you live outside of the 13 counties. If you dn't, find some1 that does. If you have an OBDII car with an AEM computer, it will not pass.

Now for you OBDI 95- cars, if it will not pass. find a station that will throw another vehicle on the dyno for you. i can do it for the right price.