No problems at all with just running it alone. If you are thinking of going with the Edge Evolution, I strongly suggest looking at the Edge Evolution RACE unit. It has all the same features as the standard Evolution as well as the option for "off-road" tuning if you want to go that route some day.
Edge Products RACE Evolution 08+ 6.4L Power Stroke | DPF Delete | 08+ 6.4L Power Stroke | Ford Power Stroke | Diesel Power | Performance Truck Products
