The cheapest was is to take off the mufflers & remove the "goats belly" and replace the short piece that the goats belly took up on either side with a piece of exhaust pipe and put it back together. Make sure the exhaust is sealed up with no leaks. You could always remove the screen later after you try that 1st because once you start cutting things you can't put them back the way they were.Ok whats the cheapest and easiest way to make my stock pipes louder?
Sounds comical but there is a lot of truth to KM's comments. (Did I really just write that about KM? lol) If you really want to remove the stock exhaust with the Goat's Belly be sure you understand all that is involved and the possibility that your power will drop as will your mpg. Decide on your specific reasoning behind having louder piper and compare that to the possible end results before you do any cutting or drilling. In the end, be sure it is what you really want.Leave the goats belly there, just remove the mufflers. As mentioned you can spend a few bucks and put on some angled tips. (will keep your tire from catching fire.)
Option two...leave the mufflers there and remove the goats belly. You'll have to find the right sized pipe to replace it on each side.
Option three, my favorite, is to leave the exhaust alone. All your neighbors will like you, you will be able to hear your granddaughter talk when your old, and you'll keep the public at large from hating bikers even more.
All the changes mentioned, other than the last one, do not make your bike faster, or perform better. Quite the opposite really.
My last and best compromise here is for you to buy some strong in the ear hearing aids....This way the bike will sound louder to YOU, but won't to all the rest of us that will end up hearing it.