Alright, I am new to the game, but I am really interested in modifing my car. v6 00 accord 2dr. My main question is deals with axel back, cat back mufflers. I know what they refer too, but what is the difference? How are they different? What is gains diff? And additional which is better for a pretty much stock accord. (I already got a cold air on it but thats it.) I really dont plan to much more than just add these mufflers. thanks for the help.