Multiecuscan

Hi all, I have question about disable speed limit in Fiat Ducato/Citroen Jumper/Peugeot Boxer with engine 2.2 diesel engine with Visteon engine unit. I have registered version 3.9R1 use ELM327 cable. When I scan car I can connect only to engine unit. In this case is Citroen Jumper. I can go to engin...