Quote:
Originally Posted by 6MT
No, I would lose the adjustments that were made when I had my Uprev tune done if i lost the battery. Yes, the ecu would do a relearn to bring the engine management back to its original settings. But that kind of defeats the Uprev tune, don't you think?
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You will not lose your Uprev tune if you disconnect your battery. The stock ECU file/tune is replaced when you get an Uprev with a new tuned "ROM" file.
To recap, the ECU doesn't store the Uprev tune and the stock tune, it's one or the other. Replacing/disconnecting the battery will not revert the ECU back to stock.