2013 Street Glide with Rush Big Louie 3 inch baffles. Doing stage 1 and changing head pipes to Rush True Duals. SERT and dyno. Question is what size baffle? Could stand a little quieter than the current set up. For those who have done this, 2 or 2.25 baffle? Want performance over sound. Also, if I decide to make a change, will a re dyno be necessary? Thanks.