Hello everyone,

I hope that someone here will be able to help me. My ECU is broken so I ordered a used one with a set of keys and lock via ebay. Unfortunately I didn`t look the year and ordered the ECU for newer model (2007 +), my bike is 2006.


Is it possible to install the new ECU on my bike?
My ECU has 26 pin connector, the new one has 34 pin connector.

Thanks in advance!

I think I found a solution. I checked the wiring diagram on both ECU-s and the only difference, except the connector, is that the new ECU has two more wires (for O2 sensor). So if I get the sensor i think that will be no problem to use new ECU on my bike.

Does anyone know what would happen if I don`t connect O2 sensor?

OK, now I see that I totally missed place to post thread... my bad... so admins/mods please do what you have to do

one more question... do I need original O2 sensor or I can use any universal two wired? (for cars)

A Universal sensor will do, the problem will be to find out the connecyors both for the ECU and the sensor.

Have fun,

j.

The ECU's are different, I changed my 07 ECU back to a 05 ECU.

http://www.xt660.com/showthread.php?t=8478

If you are interested I have my 07 complete wiring loom +O2 senor for sale. Or I could swap you for your 06 loom, you pay the postage + a little extra for the O2 sensor. PM me if you are interested.

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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