Just because you're not 16 doesn't make you any smarter than a 16 year old. Modding a Civic is what every 16 year old is doing these days, so what's the difference. You've already been given the best advice you can get: leave it stock. You're going to get NO NOTICEABLE GAINS from an intake and exhaust. You say you just want to make your car better, well putting eBay parts on it and making it louder isn't going to do that. All you're going to do is attract cops and deter buyers when it comes time to sell. Save your money until you have a car worth modding.