Quote Originally Posted by koukis14
??? how would he pass OBDII without a cat, if it didn't set a light it damn sure would not set the cat and o2 sensor readiness monitors.

Obviously since the cel is not on, all monitors are reading what is set in their parameters, as far as readiness, if the monitors have been working them the parameters have been reached. Therefor readiness is complete.As stated, the simulators fool the pcm to thinking that the 02 sensors are there. Therefore, no cel after 75-100 miles= passing emissions because all readiness has been completed