guys I have put aside the elm 327, I will use only for friends who own cars for the soft ***********, with this interface in my opel after having tinkered for pi? a month between soft pid, etc etc, I saw on the net that ? a similar interface to the elm 327 compatible only with the opel or OP-COM v1.44 I saw the video on youtube and ? just what I was looking for and very similar to ***********, you have proven? or just a waste of time? the machine ? a astra 2007 1.3 90 cv thanks a lot