Hey, so I have a previous generation diablo predator chip that came with my truck, no clue which it is but I do know its an older one. I found the switch for it, but I cant tell which setting is what seeing im still getting used to the trucks power. It has 3 settings, closest to me, a middle and a furthest setting. I was told that closest was the performance, middle was economy, and furthest was towing, any help would be nice=).