So I just got my civic in November. Its a '05 Lx Se 5 spd sedan. I love how the car looks but I want to give it a few more horses. My budget is kinda tight right now so I can't afford to do any major work. I was looking at cold air intakes but I have no idea where to start and which ones are good. Each and every one claims to be the best one out there sooo... If you could point me in the right direction that'd be great. Secondly I really want to get that deep exhaust sound. I want my car to stand out a little. So, what kind of exhaust system do you guys suggest? Hell if you guys can even just direct me at a muffler i'd be appreciative as well. And does a hi-flo catalytic converter make the sound deeper as well? Thanks alot for your guys' time, and if you have any advice on other inexpensive upgrades I'd love to hear it.