hi kev i have a power commander pc3 (i think it is its the first usb one) (not that it will talk to my pc at the min going to get dynojet to reflash the firmware)anyway please explain to me what i need to do with my 02 sensor to run a rolling road custom map with stage 2 dna akropvic pipes and blocked ais ? do i use a eliminator and if so what type ? thanks in advance ashley (also any hints on tightening up my counterbalance shaft i think its the course of my knocking i have gained)

Why do you want to update the PCIII firmware what version do you have? http://www.powercommander.com/powercommander/Downloads/powercommander_downloads.aspx?ProdType=PCIIIUSB

To correctly tune your bike with a O2 sensor you need one of Dyno Jet O2 Optimizers or one of my O2 controller, the resistor O2 eliminators do not work so don't waste your money on them.

http://www.off-the-road.de/XT-660/XT-Power/Engine-Tuning/O2-Optimizer-XT660.html

http://www.ebay.com.au/itm/Yamaha-XT660X-XT660R-XT660Z-XTX-XTR-XTZ-O2-Controller-/130846911419?pt=AU_Motorcycle_Parts_Accessories&ha sh=item1e77156bbb

All our fuel maps can be found here which you can load yourself.

http://www.xt660.com/showthread.php?t=2887

Never heard of a counter shaft needing adjusting before best get a mechanic to have a look at it, I bet the primary nut on the crankshaft is loose.

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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 /
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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

cheers kev i will have a proper look in a bit (about to do tea) but the reason why is when i first got the bike with no leads i managed to start the bike to power the commander and found a usb lead to fit so i changed the map .... went to it to put the original map back on and it will not communicate between the commander and the laptop or pc .... i did get a 9volt battery and put wires in the correct holes on the buss plug but still could not get it to communicate the commander its self is working find as its gauge shows but i just cant get the 2 to talk to each other any ideas ? was going to take it passed the local dynojet garage is i think it needs a firmware flash ?

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Yamaha xt660x 2009 blue/gold mods= iridium plug, stage1+2, removed snorkel, blocked ais, akrapovric pipes, power commander pc3usb (pre made map), adjusted tps, dynojet 02 optimiser 30amp aux relay, smoked puig screen, oxford heated grips and brembo carbon ceramic pads, rfx 30mm bar raisers, puig long adjustable leavers, plus much more and a cheep �30 alarm which stopped it been stolen

also i have done some research and had some advice from a fellow forum member and this is what im sure i can here happening

Originally Posted by Salerie
My bike started to make a heavy knocking sound in September and I left the problem to wait for a long winter nights. Now I had time to open it and I found that a nut holding gears for balancer drive, primary drive and water pump had came loose. After the lock washer was bended out of the way I got the nut off easily with fingers

This clip taken from a another forum shows the problem, notice the white mark at the end of the crankshaft and how it stays still while gears move
http://s173.beta.photobucket.com/use...0R003.mp4.html

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Yamaha xt660x 2009 blue/gold mods= iridium plug, stage1+2, removed snorkel, blocked ais, akrapovric pipes, power commander pc3usb (pre made map), adjusted tps, dynojet 02 optimiser 30amp aux relay, smoked puig screen, oxford heated grips and brembo carbon ceramic pads, rfx 30mm bar raisers, puig long adjustable leavers, plus much more and a cheep �30 alarm which stopped it been stolen

bikemad195, can you please continue these technical discussions in THIS THREAD ==>> http://xt660.com/showthread.php?t=20263

We want to keep this section dedicated ONLY to member's introduction and greetings.

Thank you for understanding.

Also don't forget you are now an XT Supporter so you are allowed to send a private message to Kev to ask for his expert opinion on a 1 to 1 basis.

okidoki cheers (is there anyway this thread can be moved so we dont loose whats been discussed ?)

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Yamaha xt660x 2009 blue/gold mods= iridium plug, stage1+2, removed snorkel, blocked ais, akrapovric pipes, power commander pc3usb (pre made map), adjusted tps, dynojet 02 optimiser 30amp aux relay, smoked puig screen, oxford heated grips and brembo carbon ceramic pads, rfx 30mm bar raisers, puig long adjustable leavers, plus much more and a cheep �30 alarm which stopped it been stolen

I'll move the tech stuff in that thread.