My mate had his car serviced by a Subaru dealer about a month ago and they told him (after a lot of questioning about what they service, exactly) that as part of the service, they will re-set your computer to stock settings unless you tell them otherwise. For people that have piggyback set ups, this could be quite bad as the dealership doesn't mention anything about it in their servicing outline.
Anyone had any issues with this problem?

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