get an air intake, saad is right, the original equipment is built for reliablity and to give u good economy,
thats why if u want to make a car go a little bit faster then u put on an air intake, exhaust headers and a free flow exhaust so that air flow through the engine increases in volume and velocity leading to more horsepower production but more importantly, responsiveness..
but racing on public roads? eventually either u will be killed or will kill someone else.