Do I need to disconnect a previous tune or tuning device before installing a tune from ZFG?

Yes. Before tuning with ZFG Racing, any previously used tune or tuning device must be completely disconnected from the vehicle.

For most tuning platforms, this means more than simply restoring the stock calibration. The device must be fully removed or "unmarried" from the vehicle according to the manufacturer's instructions so that neither the tuning device nor the vehicle remains linked to the previous tune.

If you are unsure whether a previous tuning device has been fully removed, please let us know which device was used and we will be glad to help determine the next steps.