This is a joint venture between Dazmatic & myself.
As I mentioned before I found a way to turn off the the O2 sensor on our XT's a few months ago & could prove that it worked by looking at the air fuel ratio while riding. I made up the mod using relays & temp switch's which was to complicated for the average person to wire up, I asked for help & enlisted dazmatic to help me make an electronic version that was easier to wire up.
Dazmatic has done well, the mod will need to be tested for a while before we can say it is a reliable working mod. We will need to build special fuel maps for the PCIII & PCV to go with this mod.
Yes it should work on any XT660 with a O2 sensor, but you will need a PCV or PCIII for this mod to work, as a new fuel map will need to be made.
The proof.
The surge before.
http://www.youtube.com/watch?v=ZwTfuwZZ848&feature=channel
The O2 sensor turned off.
http://www.youtube.com/watch?v=1Y9mqJtXtm4&feature=channel