Question on exhaust tip..?

[Liz]

Hey guys, I did search for a thread on this but there wasn't anything that answered my specific question.

What is the benefits/difference of single tip, dual tip, dual singles etc exhaust tips? Is it purely for looks/sound or does it add to performance to have dual tip exhaust over say a large cannon.

Thanks in advance for the help. Please add a link to a thread that answers this if there is one.

[justtalk]

It's mainly just looks, they can change the tone in some way if you have separate mufflers, but really if it's a tip on a muffler it's for looks
Some add a little raspiness.
Mufflers with multiple tips are a different thing though as it's there for a reason while the cheaper ones are there for show