Another thing is to cut about 2" off the tail pipe that exits the muffler. This allows the sound to bounce around inside the tips which act as a resonator. The stock tail pipe is long enough that most of the sound exits the tips.
Every day is a good day to ride. Some days are just better than others.
2010 Cross Country
Vic Performance filter, D&D, ATW, VFC III
2006 Vegas (sold)
2003 Shadow 1100C (sold)
Various other bikes all the way back to 1968.