I've been searching and reading, and from what I see someone get the CEL and someone don't. I am wondering if I'm going to buy a Megan TP since my cat rattles... IF I get the CEL, how can I fix it? I've read something about some o2-simulator and o2 sensor. Where can I get the o2 simulator, and what does it cost? Can someone help me?

 

if your cat is rattling its more than likely bad, also I got my o2 sims off ebay, from what ive seen there no different, just make sure to get the right voltage

 

That's why I want to change it. Are these o2 simulators universal? Fit everything? How do I make sure i get the right voltage? Sorry for dumb questions..