Hey guys, currently I am running a 2 1/2" SI/DO... bout to hit 50k miles on the truck and as far as I know these have been on the truck since the Tuscany pkg was put on back in Sept of 05 which was almost brand new on the truck... You guys got any idea on how long cats or mufflers are supposed to last? Last time I looked under the truck I didnt see a brand name on the muffler or cat.. Or what are some ways to check besides the obvious hole or something?

Also.. If I was to go buy new high flow cat and muffler.. got any recommendations to use with a Supercharger and CAI. I realize that DI/DO is best but don't have the funds currently. I currently do have a deep rumble but it is not to loud

 

Cats are warrantied for 70 - 80k miles I believe. but if they aren't broke dont fix them, unless you want more exhaust sound.

If you were looking to change your exhaust, Magnaflow hi-flow cats part #94106, 3" mid pipe to a SI/DO Magnaflow 14" connected to your 2.5" tailpipes.