I would call Bully Dog again and ask for a manager and explain the situation. It's entirely possible you got someone the first time who doesn't quite know what they can do. You may also find that the manager can explain the situation better if the unit is out-dated or some other reason it can't be unmarried from the original PCM. I have never dealt with them in particular, but every other one I've dealt with (mostly SCT) they can un-marry the tuner for a nominal fee. It wouldn't hurt to call again and get clarification. On another note, I hope you don't take this as being snarky but I would be a lot more pissed at paying 5K for a new PCM than the pennies in comparison to the tuner.