The RC-51 does not have a O2 senser but, my ST1300 has two O2 sensers. Makes a big difference on how much the computer can compensate for the fuel mixture. UFO's use microwaves to use the salt water as an energy sorce. We are just getting to that technology. http://www.wkyc.com/video/player.aspx?aid=35660&bw= I am working on getting one of the pilots of a UFO to help me increase horsepower for my 680cc bike. I thought he/she would help with a new engine but, they said, Honda has an agreement with them that they will noe give out that info.