It really isnt that hard, you bought the si trim knowing its higher performance and spent over 20k on a civic which is unheard of for a civic to begin with. So everyone just put the better gas in your car which your owners manual recommends anyway. If your too dumb and cheap(which obviously you cant be cheap cuz you spent over 20k on a civic) to put the more expensive gas in your tank then maybe you should trade in your si for a ex, lx or maybe a focus, just close this thread.
thread closed the end.
