Thigns that can increase my horsepower.

At the moment my Integra is pretty much stock but I want to change that by adding some after market parts to it. I’m thinking to supercharging my car or turbo it but I dont have the money for those kind of things at the moment. So what are some things that I can do to my car to increase horsepower?

hmmm maybe you should use the :search: button

But to be nice look into getting an intake/header/exhaust…

and to everyone else

IBTL - what does this mean?