Will replacing my old muffler with a glasspack void my warranty? If not, then I know what next mod will be.

Thanks

 

my understanding is that they have to prove the "mod" (exhaust, intake, suspension etc) has to have caused any failures to void the warranty...

 

That is correct. Aslong as you do not remove the cats you will not have any issues.(Provided it is installed correctly)

 

Like they said, no problem with it.

Go for it.

That stock 4 foot muffler is just begging to come out.....
The shorter the muffler the louder it'll be.
No matter what size you use though, you'll have to add a section of pipe.