VW don't particularly like people tampering with their ECUs and never have, they put measures in place but software engineers find a way round it, just as it will happen this time. Strip away the bells and whistles and flashing a map to an ecu is basically hacking anyway, and hackers find new ways to defeat antivirus and firewalls every day.
One company will probably nail it (most likely with help of backhanders from bosch employees) and others will copy/clone.
