the black one is tricky to see, but there should be a auxillary air device behind the inlet manifold which the plug has to go on side ways hence maybe you did not see it. It is a little cylinder shaped thing and is grey, the blue i suspect is for the cold start valve and that should be quite visible in the middle top of the inlet manifold (it plugs upwards into the cold start valve) so have a proper look because from above you might miss this sensor..

Thats just of the top of my head so if i am wrong i am sure someone will correct me.