No
One way to increase the horsepower of your car is to get rid of its stock muffler and replace it with a straight-through muffler. They are designed to keep the car quiet, but the rob it of horsepower. Another way is to buy an intake kit that will draw in the coldest air you can get.
Yes, the car can be loud because of a damaged muffler or a muffler with reduced baffles in the silencer unit. It can also be loud because of a noisy engine.
A muffler will deteriorate over time. The rattle is most likely the internal baffles breaking up and shaking around inside.
You can remove the baffles from inside the muffler but the neighbors won't be happy.
Well first the two words "performance" and "louder" do not go together. If you make it louder the way you are asking for directions i.e. by removing the baffles. You will lose around 40% - 50% of your performance or power. These bikes rely on compression of the exhaust gasses for about half of the h.p. Try removing the muffler completely and see how it performs, and as per the owner's manual modifying the muffler or running without one, will void your warranty.
If it's set up like my 2003 800 classic,you can't take out the baffles without removing the black end plate and cutting the pipe just inside the opening. It's not legal,so you might want to buy an aftermarket system instead.
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Baffles are found inside the muffler. They are used to silence the noise an engine makes while running.
Try cutting the low side of the cam off. Run octane in it. A cirled muffler that looks like a circle adds horsepower ( or any muffler thatholds back pressure). And tilt it 7 degrees forward. And Put a motorcycle carbuetor on it with an air filter.
Most Harley Davidson mufflers have "2" sets of baffles. one in the rear and one in the front close to the location where the muffler meets the head pipe. I have found the best wat to remove these is to remove the mufflers, stand them on end on a padded surface ) a few towels will do) and use a piece of galvanized plumbing pipe and a hammer and knock the baffles in until they are flat against the inside of the muffler. But, if you remove the baffles you will also need to increase the flow of gas to the valves or you will burn them out. The Vance and Hines Fuelpack or the Harley CD download ( dealer only) will do the trick. The bike will run so much better once you let it breath. Good Luck
About 3-5 hp