Hmmm... if you have a picture that'd be better.

Is there a catalytic converter on this pipe? It sounds like it's in between the manifolds and cat, so stock Y pipe? Or H pipe, whatever I'm not familiar with exhaust setups on Lancers.

A catback system is everything from tail pipes to intermediate pipe (or I-pipe) before the catalytic converter usually. Then it extends to a cat or catted y/x/h pipe of some kind. And then to manifolds or headers. That's typically how it's laid out. I know a lot of cars have a resonator and stuff on them too.

Maybe someone who knows Jap exhausts a little better can help. If it was an 82-02 Fbody I could help better.