[cdonato]

I have a 2005 2500HD LLY with only 11,000 miles on it. Will changing to a performance exhaust system void my warranty?
Should I go cat or turbo back?

 

[HBruns]

It shouldn't, though some dealerships may say otherwise.

 

[ob_1jr]

only the warranty on the exhaust (which won't be on there anymore anyway). If I were you, casually ask your service manager and see what he says. I'm pretty sure they wouldn't have an issue with a cat back system since all the emissions stuff would still be there.

 

[3cylinder]

cat back

[If I were you, casually ask your service manager and see what he says. I'm pretty sure they wouldn't have an issue with a cat back system since all the emissions stuff would still be there./QUOTE]


I did exactly that. He told me cat back ok, cat delete is a no-no? I have a cat back, I'm going to wait awhile before going cat-less.