wish. For example: on race fuel you can get away with running it a little less rich AND bump the timing up for a good gain in horsepower. But that is something you can't get away with on pump gas. So, when you get to the track, load your race program until you have to put trashgas in. Then load your pump gas program. You can also have a program for valet with whatever speed limit and rev limit you wish. The configurations are saved as .bin (binary) files. You can have as many as you want saved to disk. But keep in mind you will need a computer to upload a new program.