Anyone try these yet? Are they worth doing? What about passing emissions? I want to hear from someone that uses these and what they plan to do when its time to register their Z!

sundevil67

 

I have stillen race pipes and when emissions time comes, just put on the stock cats and go. The pipes are not raspy in spite of popular belief and goes great with my Stillen exhaust. I think the pipes will make any exhaust, regardless of brand, deeper and a bit louder.

 

Do they have resonators on them?

 

No, but there not as loud as you might imagine.