Quote:
Originally Posted by dpaul
Surprized at this problem
MA allows one flag not ready. So if your tune disables cat efficiency codes (so as to prevent the CEL light), you'll have "cat not ready" or "cat incomplete" but all the rest should set and you should pass.
Check readiness as eatsleepboost suggests and see what the issue is, if any. Just remember that everytime you reset codes with the scanner, all emission-related OBDII flags will reset and become not ready. Sometimes it can take a while for everything to set again, particularly (in my case) evap
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This is because there are two readiness for cats. Not one.