In old domestics and other huge smog machines, dual exhaust will help but honda are engineered to make as little exhaust as possible so if you go dual exhaust, all you will do is relive all back pressure (you need that going NA in a honda) and also carry around an extra 30-40 lbs, Not worth it. Also you would look :ghey: , strait out of Fast N ferrious, sound like crap, and you would be wasting a good 300 on the other exhaust pipe. DONT INVEST.