Hey dmchao.

I'm going to go against the grain a bit, I'm still having some issues with the cats. I got the original version, and no matter what I did, they caused a leak. Even with a tune. I was told that they were installed incorrectly, even though I had three different shops look at them. The first year or two, I didn't notice but it literally burned the heatshield around the cats to a crisp with the leak. It was only after another forum member messaged me on here asking about the cats did I learn that they were making them with a new heavier connector. After some cross shipping, that I paid for, I got them back and they've been largely okay. I'm coding on one side, but I think it's due to some rear clamps failing.

Overall, they sound great, but they've been a constant headache and has cost thousands in taking them off and on, shipping, and damage to the car.