......Like in the title tomorrow morning im waking up early, skipping school and going to get my car tuned. Last time I went, it took them a while to get everything working properly and they kept leaving to go print out sheets and stuff so I didnt really know exactly what was going on. Kinda scared me at first cause they couldnt get my a/f anywhere close to good and then all of a sudden they got it good like 10 minutes before they closed after like 40 min of not close at all. The print out they gave me says I have a a/f at like 12.7 and then it goes to 11.9 and then it dips down a little and back up. From what I can tell on this graph, its all at 2360 rpms. I didnt understand why my a/f was so crazy at the same rpm's. Also, when they started messing with fuel pressure, they would only rev the car up to like 4700 rpms and then stop. They said they were only doing this for tuning and it didnt have to be revd that high, but im shifted at almost 6k and I want a good a/f up there too no? Maybe they just didnt get that far. What im trying to say is, what should I look for on the graphs and stuff to make im getting my best bang for the buck?