Thanks, will it sound better by knocking out the CATs and keep the baffles ? Will it need tuning ? I believe it will reduce heatThe CAT will be in the front end of the muffler, use a long chisel and break it up and knock it out. Baffles are in the rear end of the muffler.
That link is for the header cat-ectomy. He's talking about the muffler cat-ectomy. Harley started out putting the cats in the mufflers, not the headers. You don't need to cut the muffler apart to remove the cat in the mufflers.