OK so I thought I would try unlocking the OBC to see if it works on the Vectra and found that with my car it does. I am assuming most folks know this one but I found it quite fun with speed voltage water temp and canbus info (that means sod all to me in reality) it's fun, (but on my Chrysler the OBC when unlocked was "REALLY" fun as it had a 0-60 timer, airflow readings off the MAF, inlet air temp oil and water temp oil pressure ignition map's the whole 9 yards)