Originally Posted by rich2342

I think certain codes were turned off and showing not ready or unsupported based on the tune used on my car. I had gotten the original tune from R/t tuning remotely and one map was overwritten(map 5) for my Art pipe change. I switched maps however to my 1st map given by R/t tuning using my new Art pipe set up for my failed inspection.

After detuning and being sent to MAC I was told that the Catalyst and Evap monitors must show ready status, which mine did not initially. The reasons why I do not know. I was also told that if tuned and the number is changed that you will be flagged to Mac as well.