This question is beat to Death but oh well.
How much does the Exhaust note change on Stock CVO cans and about how long does it take for them to reach that point?

Trying really hard to keep it stock and the Wife says it has a nice sound when she hearse coming, but I think I want a bit more sound.
With that said I have another set of CVO Cans with Fulsac 2 inch cores.
I only have 600 miles on the bike and undecided on what to do

 

If you get loud pipes there is a risk the law will give you a citation.

Albeit it being a low risk...it happens.

 

there is no set time or miles when they get louder or how loud they get but that said I have gutted the cat in mine and put 2.25 fullsac baffles in mine they are not to loud at all did use a screain eagle pro tuner if it were me I would put the other mufflers that you have on the bike to see how you like them it will not take that long to do if to loud take them back off degutt the cat and put stock ones back on but you will need a tuner or it will not run right

 

I just bought a used 2012 cvo rg. How would I know if the cats been removed? Are they in the head pipe or in the muffler inlets?

 

The cat is located on the right side where the two pipes come together, just under the oil filler hole. You may not be able to tell by looking, but if you remove the right side muffler and shine a flashlight in you can see the honeycomb.

I installed headers (no cat) and left my stock mufflers. Has a great sound for me, mellow. But at higher rpm under load has a "sleeper" roar to it.

I's suggest headers and stock mufflers and if you dont like it, change the mufflers to the fulsac cores.

Wigh headers you will need a tuner, I used a tts and self tuned all rpm below 5000, runs great, once I was happy with all mods, had it dynoed, and my tune below 5000 rpm was spon on and required very little in changes

Cobra Power Port Headers +TTS + 57 H cams
Stock mufflers and intake. 103HP and 111TQ

2012 FLHXSE3

 

If it has cats like my 12 street glide then go catless headers. Same mufflers gained some good sound. Not too loud but enough to sound good. It also added some bass.