Yes, you may return to stock and tune a different vehicle up to 5 times. Your remaining unlocks will be reduced every time the device tunes a different VIN number.
However, only one vehicle can be tuned at a time. In order to tune multiple vehicles simultaneously, you will need a device per vehicle.
*To reset your device unlocks to be able to pair with 5 more vehicles, contact our sales team. Resets are $65 to reset these settings.