The fault code for the catalytic converter may be caused by a Mass Airflow Sensor that is slightly out of range. Replacing it will probably fix your problem. As for the after-market catalytic converter, it may or may not be functioning properly. Rather than using the temperature test, the true test is the range of emissions is at the tailpipe.
SPONSORED LINKS
Wednesday, August 25th, 2010 AT 4:26 PM