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.