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...

If your bike has a O2 sensor it is located in the left front exhaust header.

It fits here.

http://www.xt660.com/site/files/images/o2sensor3.preview.jpg

You can fit a PCV or PIII to any year XT660X/R from 2004 to 2011 they all fit & work. If your bike has an O2 sensor & you want to get the fueling spot on you need one of my O2 eliminators or one of Dyno jets emulizers + the Power Commander you want to buy.

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Mods that I have done to my XTX's

My 04 XTX
Stage 1 & 2 DNA filters / Kev fuel mod / snorkel mod / Drilled air box mod / Engine breather mod / Fork Spacer mod / 15w fork oil /
[
My 07 XTX
Raptor 700 cylinder 102mm / Modified Crank Case to take a 105mm Raptor Cylinder / 11:1 102mm JE Raptor piston / Stage 1 Raptor Hot Cam / Ported head / Colder Spark Plug / +2mm Throttle body / DNA stage 1 & 2 filters / Modified Air Box / Snorkel removed / Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts / Recovered seat in Black / O2 Eliminator /

My 09 XTX
59HP at the rear wheel / Stage 2 Raptor Hot Cam / DNA stage 3 Air Box / Carbon Can Exhausts / Modified Exhaust Link Pipes / PCIII With Custom Fuel Map / Wideband Commander O2 Data logger / LCD100 Dyno Jet display & fuel adjuster / 2500 OHM HT lead instead of a 10K OHM XT lead / Extra Coolant Cooler / Protaper Fat Bars / Tail Tidy With LED Tail Light / OKE Protection Knobs / LED indicators / AIS blocked / Modified rear sprocket rubbers / Rear Foot Pegs removed / 09 ECU With 02 Sensor Changed To A 06 ECU / Complete wiring harnes Changed from 09 to 04 / Home made LED resistor flasher / Hole drilled in the fuel tank filler neck to allow quicker filling / Modified Bar End Weights / Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer / Changed front & rear guards from blue to black / 47T rear sprocket / Speedo Healer V4.0 / Kev throttle cam mod / Throttle grip mod / The new 2010 O2 sensor mod is out, works a treat, The new 2012 O2 Controller is out, PM me for details

Now ride a 2018 MT09SP ABS + TCS

My KTM 990 SMR Mod book. http://www.ktmsmt.com/viewtopic.php?f=13&t=4946

thanks for your quick response. Can this bolt be seen without having to remove and panels etc?

__________________
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...

Timboo, before committing to DynoJet, please pm me for a quote as I have a supply direct from the factory.

As for the 02 Sensor this is visible (if present) on the left hand side header that comes from the cylinder and its about halfway from the cylinder to the radiator and can easiliy be seen without removing any panels.

In this photo I have removed the O2 sensor & blocked off the hole with a blanking plug, if your exhaust pipe has a o2 sensor it will be bolted to the lft hand exhaust header.

__________________
Click here to join the XT Supporter's scheme

Mods that I have done to my XTX's

My 04 XTX
Stage 1 & 2 DNA filters / Kev fuel mod / snorkel mod / Drilled air box mod / Engine breather mod / Fork Spacer mod / 15w fork oil /
[
My 07 XTX
Raptor 700 cylinder 102mm / Modified Crank Case to take a 105mm Raptor Cylinder / 11:1 102mm JE Raptor piston / Stage 1 Raptor Hot Cam / Ported head / Colder Spark Plug / +2mm Throttle body / DNA stage 1 & 2 filters / Modified Air Box / Snorkel removed / Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts / Recovered seat in Black / O2 Eliminator /

My 09 XTX
59HP at the rear wheel / Stage 2 Raptor Hot Cam / DNA stage 3 Air Box / Carbon Can Exhausts / Modified Exhaust Link Pipes / PCIII With Custom Fuel Map / Wideband Commander O2 Data logger / LCD100 Dyno Jet display & fuel adjuster / 2500 OHM HT lead instead of a 10K OHM XT lead / Extra Coolant Cooler / Protaper Fat Bars / Tail Tidy With LED Tail Light / OKE Protection Knobs / LED indicators / AIS blocked / Modified rear sprocket rubbers / Rear Foot Pegs removed / 09 ECU With 02 Sensor Changed To A 06 ECU / Complete wiring harnes Changed from 09 to 04 / Home made LED resistor flasher / Hole drilled in the fuel tank filler neck to allow quicker filling / Modified Bar End Weights / Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer / Changed front & rear guards from blue to black / 47T rear sprocket / Speedo Healer V4.0 / Kev throttle cam mod / Throttle grip mod / The new 2010 O2 sensor mod is out, works a treat, The new 2012 O2 Controller is out, PM me for details

Now ride a 2018 MT09SP ABS + TCS

My KTM 990 SMR Mod book. http://www.ktmsmt.com/viewtopic.php?f=13&t=4946

ah ha that answers that one thanks for the message..... I can confirm mine doesn't hav one now..........

__________________
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...

will let you know soon as i ready will be at least several months..... cleaning bike up first and tyres etc.... the list goes on..... ;-)

__________________
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...