Check the listing for details. Porsche Cayman ECU Clone Service. Listed at 250.00 USD. Cayman R and GT4 owners especially appreciate this because factory tuning work is preserved. The format is98x 907 xxx xx : 987 for 2006-2012, 981 for 2013-2016, 982 for 2017+. We match both the Porsche part-number suffix and the Bosch hardware code before writing the clone.