I live in CA. I now need a smog check in a Star station. I will fail a visual test with my set up having a gutted cat and a non fouler on my second o2 sensor. So I recently bought a aftermarket pre-cat from Eastern Catalytic converter to pass smog, removed the non-fouler unused an on second o2. I I wanted to know you all's opinion for me to leave my new catalytic converter on I do appreciate the exhaust not smelling so bad like without it. I am just worried it will ruin my engine again. What should I do in this situation?