Can cat convert be fried due to muffler & resonator delete

What is your question?

I am being told by a dealership that somehhow a delete thats downstream of a cat somehow affected my converter and clogged/fried it. They refuse to send proof and havent found a reason why they are just saying thats the reason why. I dont understand since deletes reduce backpressure and give less restricted airflow which actually improves the car not hurts it. I havent had a single check engine light pop up, my cars self diagnoses states my emissions and oil are okay and nothings wrong with them. I believe personally its a cvt slip but they keep arguing. So my question is can a cat convert be fried due to muffler & resonator delete

How long has your 2025 Kia K4 had this problem?

A few days