yea, like what other people said, corolla is more like an economy car.
if you want real performance, get another car like a celica atleast.
but hey, if you love your car too much, cold air intake is good. also try a new exhaust system. those two things actually will increase fuel economy by allowing the engine to breath better.
supercharger is a good idea too if you want more power. it will reduce economy but if your after performance, go ahead.