Im thinking about putting a dual exhaust on my 01 accord I4 cp. I want it to look a little better and sound a little more decent, but I also want a hp boost. So far I dont have any engine upgrades (I have been working on video/audio along with appearance, but now I want to beef it up a little bit). I was wondering if it is worth getting a dual exhaust (cat back), if so which kind is the best bang for the buck and if not, what kind of single exhaust (cat back) is the best bang for the buck. Also if you have any opinions about what cold air intakes are good for the money, but still reasonable, dont hesitate to leave some feedback. Thanks