you got cocky cuz you got a V6 y0! DANG! You lost to a GSR? SHIET! A Civic Si will beat j00! y0!
No but seriously, you obviously don't know much about cars since you're asking us why you lost to a GSR. I bet a stock LS with bolt-ons will beat you.
also: Intake, Header, Exhaust =/= "so much mods"
If you want a fast car, get another car.
An S2000 is a 4 cylinder, can you beat that?