ANA has an engine failure reference procedure published for the B767 off r07L and R. This procedure is also applied to single engine missed approaches. Basically, it calls for tracking to Rover or Porpa, as appropriate, then a LEFT turn to a track of 182 degrees
Dragonair, the locally based airline has the identical procedure to yours. In my opinion, if you stand in the tower and survey the standard missed approach track re terrain, there is a genuine low point below that track.
I have been told about the procedure in question and it basically says fly the runway 07L or R track to 8 DME then turn RIGHT and track 190.
I believe that in the event of an engine out missed approach above maximum landing weight only, the performance engineers would have determined that the standard missed approach climb gradient requirement exceeds the aircraft capability which would by the insistence on this procedure.
Would the right turn really cause an issue?