So yesterday while playing around with the car. My friend and I was racing down the freeway and I got up pretty high in speed. Once we pulled over at his house and let the car sit, we came back out and my car smelled like rotten eggs and such. So I got up in speed again and got home and the smell was back again. My mechanic friend said he truly believes my CATS are all clogged up. Here are my questions:
1. Is this possible? I never had a car with clogged CATS.
2. What clogs a CAT?
3. How do I fix this issue?
4. What does clogged cats affect?
Little background info. I normally run ONLY premium gas, I have put mid grade in once or twice. I put Seafoam in the car a while ago and I noticed nothing extra from it. Any help will be appreciated.