DOES ANYBODY HAVE EXPERIENCE USEING 2.5 INCH X-PIPE AND CAT-BACKS VERSES 3 INCH. I HAD 3 INCH ON MY VIPER AND WORKED FINE BUT DO NOT KNOW ABOUT THE 4.6 S/C. ANY FEEDBACK WILL HELP, THANKS
I think just about everyone will say get the 3 inch. 2.5 will pry be too restrictive.
BTW here's some advice, get a Dynomax catback, they are the same designs as like Bassani, Magnaflow and some Borlas, they cost half as much and are just as good in quality.
Careful when you are shopping, some of the catbacks for the cobra's are 3" tips, but most of the piping is 2.5". Either way it will be much better than the stocker.