Just cut your exhaust right before the cat, take everything else out, its just deadweight. Take your intake off, just run straight throttle body, its all you need, then break all your windows and rip out your interior, they just weigh the car down take the drivers seat too, you can sit on a milk crate its much lighter. Go to a welding shop get an oxygen tank and duct tape it to the floor next to your milk crate, hook some hoes up to it, and stick the other end in your throttle body. then take your windshield washer hose, stick that in your throttle body too, and fill the resevoir with alcohol. when you wanna go fast turn the oxygen tank on, and hold the windshield washer button, shazam! 750 hp at the wheels. You can take down a ferrari with that shit and only for under $100. Oh and i almost forgot you need at least 10 nos stickers.
Seriously guy? forget civics you need to go back to modding your bicycle.