Well, considering you didn't explain what kind of civic you got, (year/ef/eg/ek.) I know that doesn't really matter, but you could have at least put a little more information about this. What are your plans with the car? Just to put 1 thing on it and think you're the shit? No. Maybe if you said 3 things... I.E. - I/H/E (Intake/Header/Exhaust if OP doesn't know what that means,) but also what are you plans. Are you going for boost, all-motor, or what? Or are you just planning on putting 1 thing on your car and thinking you're sweet nector?