Dual exhaust question

[cyguy]

Hi everyone, I am a newbie to these boards. I have a question to ask anyone about dual exhausts. I have a 96 s14 which i got from my brother. It has a two universal exhausts hooked up to it with custom piping done to the catalytic converter. It's not a dual like how the Apex N1 exhausts come, it's one exhaust on each side, like a mustang or any other V6 car is. My question is if this makes me lose or gain torque? I have asked around and have been getting both answers. I'm not sure which one to believe, that's why i figured I would ask some 240sx owners since you guys would know more about the car.

thanks.

[Bbandit]

hmm... i think you'll loose some tourque since dual exhaust (one on each side) will loose backpressure to your engine..
as far as i know.. if you're going n/a 2.5 inch diameter single exhaust is the biggest you can go.. but still thats with single exhaust..
i suppose you loose some low end tourque using that dual exhaust setup

correct me if im wrong guys