hiya just been on the phone to dyno jet pricing up a power commander for my xt660x 56 plate (registered jan 07) and i believe the year of my bike is on the the border between when it has an o2 sensor and when it doesn't.

I believe there would be 4 wires somewhere on the exhausts if it does have the sensor but not quite sure exactly where?
I'll have a look see if i have any joy finding them.

Dyno jet stated that if it does have the sensor then i need the pc5 as it comes with sensor inc, if bike dont then pc3 will do.

Anyone any ideas? or alternatives?

thanks

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2004-2006 Yamaha R603 plate Akra carbon can Ohlins steering damper carbon air intakes/rear fender/hugger double bubble race screen YM600 cycle lock LED indicators tail tidy
2009 - 2009 Yamaha R657 plate with titanium Akra full exhaust system ASV short levers Carbon fuel tank/front fender/rear hugger Ohlins steering damper LED indicators, double bubble race screen
2011 - now Yamaha XT660X 56 plate mtc cans 2b contd...