Is there EVER need for a dual exhaust on a 4 cylinder engine....nope. IMO:tfg:

[edit] I know a kid who went to my high school. He put dual exhaust on his 2.0L avenger, non-turbo. What a queer he was, as I think back but back to the point... the pipes didn't split even so one side actually sucked in air, and when he started it cold, you could see exhaust coming out one side only. HAHAHA it was funny to see.

So point being, all he accomplished was to get a REAL loud sound so everybody including the po-po could hear him coming.:thumbdown