Clear up my exhaust question

[pryord]

I've read several old posts that discuss performance gains from pairing a Euro premuffler with a Sport Muffler. I like this idea because it allows me to easily add my cat. back on the car for inspections. I'm a little confused by the term "sport muffler", though. Pelican describes a sport muffler as dual in/dual out. If I had a this set-up, I wouldn't need a pre-muffler to replace mt cat., right?!?

Can you clear up my confusion?

[masraum]

Generally the term Sport muffler does imply the early dual in dual out muffler. When people are talking about later cars they usually just mean some sort of free flowing dual out muffler.

If you go with the early sport muffler then you replace your whole exhaust and don't need a cat bypass. (this won't work if you have emissions inspections)

If you go with a cat bypass, then you can stick with the stock muffler, or change to another after market muffler, or some people have even altered the stock muffler to have a second outlet.

Hope this helps