But it also tunes your VE tables so that you don't run too rich or lean. Hardly pointless in my opinion!!! If you have mods on your car then it is always a good idea to get it tuned. Even stock cars benefit from a "custom" tune. Although now, I'm finding out that you can't even do a custom Honda tune unless the car is a manual transmission. I was looking for tuning software myself this evening and hondata is the only thing that is really available to us!! But like I said if you run auto then you can't do much about a tune anyway.