First off....
to the .org bud!
You must have the newer Evo than I used to have.
You should be able to plug it in to the OBD port and follow the instructions it gives you, no?
Is it VIN locked to your buddies truck? By that I mean, did he return his truck to stock before he gave it to you? Find that out.
If your just wanting milage, I would just try out the tow and race settings on it, and see which one gives you better MPG. I wouldn't mess with the shift points too much with an Evolution.
