I put the Fullsac 2" cores in mine. Only thing I've done so far. Nice little rumble without the drone. Put over 100 miles on it yesterday and I'm happy with it. I'll leave the cat in it this year and see where it goes from there. Your CVO already has a high flow air cleaner so that's not really needed unless you want to change up the look.
I had HD install Vance & Hines dresser dual headers and high flow mufflers right out of the showroom to the service bay before I rode it home, when I picked it up it had 6 miles on the clock and the new pipes and stage one download. sounds awesome, alot like my 2002 that is listed in my sig pic. gonna add a SE race tuner at the 1000 mile tune up. 330 miles on her so far.
I installed Fulsac DX header, 2'' cores and also a TTS tuner with a download from Fulsac. Performance is much better and the bike sounds great. I also left out the packing. It just sounds so much better without it.
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