This tune description is over used in the tuning industry. What is a "Stage 1 Tune"? Its a tune that we optimize for your basic bolt on's. This is what we could call your air intake and exhaust tune. But, if you have additional mods on your car, we can accommodate those also. Stage 1 tunes come with 2 free tune revisions (total of 3 tunes) to accommodate your basic to expansive list of mods.