Hit the Department of Transportation web page or web page of the state currently residing in for answers on Cat converters and the penalties for removing them. There is "0" performance gain by removing a functional converter. Put playing cards and clothes pins on the spokes for a cooler sound...
As Xfireblur says...The Borla system on the NA xfire is perfect.
Originally Posted by xfireblur
I wouldn't do it. The xfire already has a nice sound with the stock exhaust. I think cutting the cats off will give it a cheaper sound, and I doubt you notice anything as far as HP gains / back pressure differences go. Not worth it. Buy you a full after-market exhaust system if you're going for more power and maybe a different sound.