What's the point in doing cheap mods? Paint your interior, that's cheap. You could even get some hubcap spinners... haha.

Seriously dude, save your money and mod your car with worth while mods. Don't mod it just to do something to it. I've been in your shoes man, and I know how it feels. But if I could go back and save my money instead of buying the stupid things I did I would.

:edit: and regarding 'performance' chips, run away from them as fast as possible. I'm sure you've heard 'too good to be true', well those are exactly that. They are not a good mod, don't waste your time or your money on them.