I have bad news for you... you should go and have a look at your VIN (Vehicle identification number) it's on your registration....it should start with JHM and then have some letters and numbers after.... You say you have an FD1 but that's the JDM civic.
Chances are you have the (European) FN1 or FK2. The engine in your car is most likely an R18A2
http://en.wikipedia.org/wiki/Honda_R_engine
It's far from a performance engine.... the i-VTEC in that civic pretty much shuts down one or more cylinders when it cruises. The i-VTEC system in anything else but a type R is meant to save you fuel not give you power.
http://en.wikipedia.org/wiki/VTEC
Bro, save your money. Spend 500 max on a cat-back exhaust to make it sound nice and get yourself a set of rims to make it look nice and stop. Modifying that engine will burn a BIG hole in your pocket and you won't see any power.