Hey Bob, you're very welcome. When I first got the TOR's the dealer loaded a new tune (don't know which) and there was absolutely no popping. I think the dealer can do it, they just need to try til they get the right one. But as was previously said, tune boy is the way to go. I swiched up the pipes from time to time also (2 tor, 1 stock pipe. 2 stock pipe, 1 tor) just depending on how I felt. Don't ride with your Harley buddies with stock pipes, you won't hear our bike.