03 si...
 

ok.
so i have this o3 civic si and i modified it up a little, just the basics i guess.
i put in an AEM V2 intake and DC headers and a Tsudo cat-back exhaust. i was just wondering like how much HP that would give me. i wanna know what else i can bolt on or something. any suggestions or comments? thx in advance.... :D

upgrade that header to a race header and you would get decent HP gains. :cool:

can suspension increase speed or acceleration????

no. it increase how well the car handles at increased speeds.

well a good suspension can and usually increase will make you faster because you transfer the power more effeciently to the ground and get better traction course this will work or not work depending on how good of tires you have...all of these factors work together.....in fact i was watching something on tv(or maybe in a magazine..cant recall) where they were test drving a rsx-s and they dropped like almost or a whole second of the lap time with a better tire and rim combo

Your car doesn't have Headers, it has a Header

i believe in accurate info but why does EVERY time some one say "headers" someone have to come in and say NO NO NO its header....im sure most the time its a grammar error any one with ANY knowledge knows ANY inline motor has a header and not headers....just saying:doh:

the same reason people correct the spelling of vtec. semantics. :hsughr:

it doesent matter, as long as u know what i meant... gawd.:rolleyes:

i was just wondering... how much ponies will a race header add??