What Is The Best Muffler In Terms Of Sound

Does the bigger the muffler the better th sound?

It is bolted on unless you have some sort of custom car. What I would suggest is that you take it to a independent muffler shop and have one fitted as to the specs from the manufacture. Alot of research goes into making muffler assemblies and you shouldn't just put anything on your car as it could cause damage to the engine.

How to get a better sound?

2.5'' cat back exhaust with a set of headers of the same size. check with your local council though or government as to sound ristrictions. if there isnt any go with a straight pipe from the headers to a oval muffler (no cannons as they are for ricers) then if you want some intake noise get a Cold Air Intake. you can make them yourself easy enough and if you HAVE to a pod (which are also gay)

What is the difference in sound between a short and long muffler on a motorbike?

Generally speaking, the shorter a muffler is, the louder it will be. Basically, a muffler is a perforated core (think of a pipe with a bunch of holes in it), surrounded by fiberglass or some other sound-absorbing material. That assembly is then placed inside a cylindrical shell, which is what you see when you look at the muffler (the outer shell). The packing material absorbs the sound, so the shorter the muffler is, the less packing there is to absorb the exhaust pulses. Mind you, there are different types of mufflers, and different shapes. But this is just an illustrative example.

A shorter muffler will make the exhaust louder, but it will also allow more high-frequency noise (the exhaust will have a higher pitch). A longer muffler will absorb more noise, and a larger core diameter will result in a deeper sound.

I have an inline-four, a parallel twin, and a v-twin. The parallel twin uses 27"-long Dunstall megaphone mufflers. They sound deep and a bit loud. Very good sound, in my opinion. The v-twin uses a 2-into-1 exhaust system, which ends in a megaphone muffler. Due to the length of the muffler, it reduces most of the high-pitched "bark" you can encounter when cracking the throttle.

Any aftermarket muffler will be louder than stock. You can get a longer muffler, and it would still be louder than stock. Mufflers which use a mechanical baffle are very loud; they do not have any sound-absorbing material within. Instead, they rely on baffles placed at intervals within the muffler chamber to bounce and redirect sound. Some baffles have holes in them; some do not.

Realize too, that you'll have to listen to those pipes while riding. I've had exhaust systems ranging from stock to "open dragpipes". The louder pipes get annoying rather quickly. The longer aftermarket mufflers allow plenty of rumble and volume, without annoying your eardrums.

Just my two cents, man!

Will welding a muffler to a stock exhaust pipe change the sound?

Yes, removing the old muffler and putting on a performance muffler will make the biggest difference in the sound of your car. Other things affect the sound, but not to as much of an extent as the muffler. Headers sound different than cast iron manifolds. Pipe diameter affects volume and tones. Even having a larger tip will make the exhaust louder, it acts like a megaphone, amplifying the sound.

How do I get the ricer sounding exhaust?

You're straight up about it, and I respect that, so I won't hate on you.

Four methods you can mix and match or just choose one. One of which is illegal so if you have any kind of emissions checking cops, I wouldn't recommend it.

Method 1: Cheap $20 "Perfomance" muffler off eBay. This is the least work involved method.
Method 2: Remove your catalytic converter. This can throw a CEL code and more than likely will actually decrease performance in most 4 cylinders. Replace that part with what is affectionately referred to as a "Test Pipe". If you want to do it right, I suggest attaching a pipe fitted with flanges so you can more easily put the Cat back on if you change your mind instead of re-cutting and re-welding. As with all flanges, don't forget your gaskets.* Remember, work smart, not hard.
Method 3: Leave your muffler off.
Method 4: Remove your exhaust resonator. This is what affects your exhaust tone the most.

Any legit muffler shop will NOT do Method 2 for you as of the legality involved. If you don't have the tools to do it (Sawz-all or hacksaw and a welder).

*Ricer Tip: spots in the exhaust where the pipes are connecting but aren't sealing fully (overlapping for example) will create the "brap" sound due to the exhaust flow being interrupted.

Remember though, as far as performance for a 4 cylinder goes, reducing restrictions does not always help actual performance. The tipping point for it becoming a hindrance instead of helping is a lot shorter than it would be for a V8.

Either way, just be safe about it.