Since your starting with that platform i'm going to guess your not ready to throw down the cash needed for %26quot;turbo kit, bigger injectors, exhaust hood(wtf?) blow off valve(another wtf?)%26quot;. You just want to drop small cash and due to your line of questioning i'm also going to guess your not a mechanic yourself which means paying someone to do all your work. That gets real expensive. But if you want to do a few reasonably cheap mods to get a little more out of your car, I would first get a better flowing exhaust. It sounds more aggressive and allows the engine to breath a little better. Don't drop the cash on a kit though, it will cost you more. Instead go to a muffler shop and tell them what you want. It will be cheaper and most any reputable shop will give you a much better finished product. The next item would be a better intake. A cold air intake is better than a factory design and it looks cooler when you open the hood. The filters flow more air and the intake itself will be smoother so you get more air in. I don't remember the factory plug gap setting but don't change it from stock. You will only hurt performance.
the last thing is for Man, torque does not create horsepower. They are 2 different things.How do you make a Honda Civic accelerate faster and/or smoother?
A bigger engine makes more torque more average torque makes more horsepower, you can also turbo it, a cold air intake, exhaust hood is waste of money cause all that equals price of turbo kit and attracts cops. Turbo kit should include turbo better more power and effect it is and higher flow injectors and a blow off valve along with inter cooler and piping. Some of these might not be included buy you can buy them for reasonible price you will also need a boost controller certin ones are cheap but work good.