Heard of the Inpulse water injection mogas system but have never seen one! Doubt you would get Mogas of the required 91 Octane, ethanol free spec in PNG other than pre ordering drums, Certainly would not trust it from the pump!
PNG is a beautiful but very dangerous country, leave the 206 at home if you feel the need to take a look ... I am fairly sure politics prevent the Government from issuing the travel warnings it deserves.