I think stage 2 is exhaust and intake. Stage 2 is what I'm going for, but I still don't know what tune to get. If anyone can help me out. So far I have a Ingen cold air intake and Invidia N1 catback. I want a tune that will give me a bang for my buck. Something not to expensive and that will show results. Also, I don't know if I will be able to tune the car myself, so where would I tune it? Looking to run on 91 Octane. By the way, it is AT transmission. I'm still deciding on buying headers...Borla maybe. Thanks.