Why does it need to be louder?? You starving for attention? If you have to be heard before you are ever seen, then spend the money for the pipes. I dont mean for my answer to sound rude but..... Harley's are pretty loud anyway. Why be obnoxious?
Good for you Neanderthal ! I can take put my hearing aids but what about the folks who don't want to listen to a noise polluter! ?!? by the way what doc suggests used to be illegal in some communities, and may still be!
Drill out the baffles, then you will need to have HD dealer dial it in since you took away the back pressure. depending on what the noise ordinance is where you live, you may want to look into it before you do anything!