stock or lightly modded, a stage 1
3L or turbo or supercharger, stage 2
insane turbo or turbo 3L (beyondlaodedse and burritaSVT), stage 3

the higher the rating, the worse it will eb for driving in traffic.

most people shouldnt need more than a stage 1


Russell Oval Port 3L Nearly Done MTX75 w/ Homebrew Zetec FD and Torsen Complete