There is a cheap IAW15M ECU on eBay. Buy it and squirrel it away for a rainy day. Can be cloned to your current ECU using Guzzidiag cables and software. https://www.von-der-salierburg.de/download/GuzziDiag/IAW15xReader_V0.68.zip https://www.von-der-salierburg.de/download/GuzziDiag/IAW15xWriter_V0.27.zip https://ebay.io/m/z39Pv4