Cheap Ideas to tune up 02 SS

Lookin into tuneing up my 02 SS. Not alot of funds right now so I was wondering if there was much I could do to tune it up without money ( or at least not much). Maybe better plugs, wires, something. Pretty good under the hood but not crazy! Also, can anyone tell me if all 02 SS are supercharged or how I can tell if mine is? Thanx:iamwithst

None of them were supercharged. They began the s/c model in 04, called the SS Supercharged. In 05, it was just called Supercharged. Although the engine was first in the Monte in 04, it has been in other GM cars since 96.