Originally Posted by Red__Zed

Having ridden bikes for quite a while, louder exhausts don't translate into people changing lanes into you less frequently. Besides the fact that at highway speeds, you can't really hear a bike no matter how loud they are, the sound of a bike doesn't generally stop people from changing lanes.

If you have experience riding, there's no reason to be in a position that someone can change lanes into you. All that happens when you put on loud pipes is you help reinforce the negative stereotypes that the general public has about bikers.