Hi guys,

over the last two tankfulls, I noticed my mpg has dropped from 65 to 56!

Could be the fuel I bought or !??

I would like to check few things, one being the CO setting (which you access via the diagnostics settings).

Would anyone knoe what the standard CO setting for my bike is (XTR660R-2009) ?

They are all different, there is no standard number across bikes
Could be so many variables, air temp, fuel temp, how you've ridden, tyre pressures, chain tension, length of trips, all could change mpg

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K+N filter, snorkel removed, homemade kev mod (with his blessing), co raised,
Pipeworx cans, r1 led back light, under tray removed, small indicators, handguards, cnc short levers,

i was thinking if there was a default number setting. from what you are saying, i guess this is not the case.

i agree with all the variables you mentioned. i have found that winter/ cold weather has the most significant effect (like for like). of course you would expect that!

thanks

The CO dash adjustment only affects the A/F ratio at idle & up to part throttle at a TPS reading of 18, after 18 on the TPS the bike switches to a pre-programmed fuel map.

Most of the 09 models CO's were set between -5 +5 in the dash.

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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 pal

this is exactly the info I was looking for- gold mine of information

interesting about the working range of the setting. on a car i had many years ago (pre- O2 sensors, etc) it was referred to as the "static A/F mixture setting".

BTW what does TPS stand for?

Throttle position sensor
0-90 degrees of the butterfly opening I guess

__________________
you win some, lose some, crash some
K+N filter, snorkel removed, homemade kev mod (with his blessing), co raised,
Pipeworx cans, r1 led back light, under tray removed, small indicators, handguards, cnc short levers,