I live in CA and recently my car passed the smog test, but failed inspection because the check engine light on the board was on. When the diagnostic test was done, it said there’s a problem with the catalytic converter. It’s so frustrating because the car’s emissions are within limits. The part of alone costs $800 and must be bought new because there is no after-market equivalent. So, I was thinking… Is there a way to get the catalytic converter to run cleaner without replacing it? If it can run long enough to pass the diagnostic test, my car could pass inspection.