tc? what one earth is that. ANd i am glad there are the forums stuff i like learning this stuffWell you're pretty much stage 1 so the looney you have is for your truck. Once you go turbo and injectors then you're into stage 2 or 3 and will need custom tunes for your truck and your mods. Request the looney race, pretty sure that DJ locks the tc in 2nd-5th.