I bought a used tuner and the guy still kept his performance tune on his car. He had it on a Thunderbird so I didn't want his tune anyway. I did have to return it to a dealer to be unlocked, updated, and retuned for my mustang, but really, do you want to run someone elses tune for a different ECU anyway?
I'd say try it and the worst that you'd be out is shipping both ways to unlock the tuner if it didn't work.
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