You know you only have to spend $450 for a conditional pass so if you needed to replace the cat you would get one without replacing the cat cause for sure they are worth more then 450 although you can only get a conditional pass once every 4 years.

I would love to see your numbers Steve. To see what is actually causing your failure.

The first gen of OBDII was pretty simple very basic. Todays OBDII if your engine light isn't on you will pass for sure.