Originally Posted by FeedMetal
so if i get the BD hemi + tuner i have to have it hook up to my truck all the time when running a tune? if not i could use it on both trucks at once?
You don't have to keep it hooked up to your truck at all times. You can just load the tune and then unplug it from the truck. But no you can't use it on two trucks at once. Once a tune is installed on one truck that tuner becomes "married" to that truck until it is returned back to stock.