You can go as low as -10 on these bikes, your setting will depend on how the PCIII map was built.

Great, thanks, will have a play when it stops raining!

fuelling fix
 

hi, was looking to know if i should increase my co1 up,am replacing tps and have put standard pipes back,also running a powercommander,

What XT660 XTX, XTR, XTZ?

What year XT660?

What are all the mods on the bike?

What map areyou running in the Power Commander?

What is your CO1 set to?

Kev, you say on your ECU page that the 2009 onwards ECU doesn't benefit from less surging by increasing the CO value, and can introduce stalling. Is that still your opinion?

A to rich a mixture does cause the X & R's to stall. Increasing the Co up by 10 does help with part throttle surging, if you want to get rid most of the surging I would fit an O2 controller this has been proven to be the best option on the surging front.

o having just purchased a 2010 xt660z I thought I would try a few cheap mod's, I got myself a Pipercross air filter and removed the snorkel.
Tried to adjust the Co as suggested at the start of this thread, However holding the select and adjust button down as I turn the ignition on doesn't seem to work !!!
Any ideas anyone ?

You can't adjust the Co in the dash on a XTZ, you can only do this on the X & R models.

Thanks Kev !!
:eusa_think:

You need one of these to do the diagnostics on an XTZ...

http://www.yocracing.com/accessory_s...8900318200.jpg

If you intend to keep your Tenere for a while, and you are keen to do all your own spannering, then it really is a "must have" bit of kit. I've already got more than my money's worth out of it.

Cheapest place to buy I've found is here.

Thanks for the advice, appreciate it, Not sure how long I'm going to keep the bike yet, Must say that even fitting a piper air filter and removing the snorkel seem to have made a difference. Maybe the next stage of replacing the stock exhaust will be enough for me.
Thanks again

My C1 was on 0 by default. Is this normal? Ive set it to 8 and waiting for my shift to end so I can test it out.


Edit: rode it home today. there seems to be some improvement, very little but I can feel it there (that is if i did everything right).

sigh another mod that no longer has any of its pictures 90% the things i try look at here are no longer available guess i come to this forum too late

Dave don't despair, just ask for new pics. When I get indoors this evening after work I will post some detailed pics of the fuelling fix procedure.

I believe that whoever posted those original ones did it 10 years ago on a free host which has probably become inactive or the owner's account has been removed and with that all his links. Poo happens but we are here to fix it.

Thanks cap it was the engine breather pics I was looking for today I understand why the pics vanish just don't like having to bother people to post again

Kev, you say you can only go to -10 on these bikes. Mine was set at -8 (factory default). By changing it to -3, there is a difference, but a very small one. Can I set it higher? Bike is 11/2005, completely stock.
Thanks everyone!

Yours should be between +10 & +20 for a 2005 model, we only started to see - numbers in 2007.

Thanks for your fast reply!
Bike had Mass and Akrapovič exhausts before, but previous owner never heard of CO setting, so it should be alright. Maybe european bikes were set differently?
Or maybe I have newer ECU :120: Is there a way to check that?

So you say, it's safe to set it to 10-20, even though original setting was -8, and new setting would be far from it?
Thanks!

Never seen -8 on your year 660.

Sorry for a late reply. I have now fitted your fuel mod and removed snorkel (eveything else is stock). Surging is almost entirely gone.
My standard CO was at -8, now I'm at 2. My bike has 01 ECU. Should i still go for something between 10 and 20?

Thanks.

You will be fine with the CO where it is now the fuel mod will do the rest.

Is this where it all started then?

A very interesting read.

any way to know defaults CO settings after 3 owned bike?..
i see a PDF for the X ...need now for R 2011

Good morning! Heeeelp meeee!!!!
 

I have noticed lately since my visit to a workshop ( and before the motorcycle sat for a long time in the parking lot, that's why it was the service...) A scary reddening of the exhausts.

Of course I can anticipate you... yes this guy started to mind TPS & Co and I do not know if he reinstated them to the original settings.

If I ride a few kilometers they begin to reddish.

Has it happened to someone else ...?

Guys, do you need to change CO settings after fitting new aftermarket open exhaust?

Hi Kev i have just purchased
O2 Controller + Fuel Mod from you can you please send me the link to download the fitting instructions.

Thanks Steve'O

http://i802.photobucket.com/albums/y...psy8fqiyb5.jpg

My sparkplug gets like this very fast. I understand the fuel mixture is very rich.
My bike is xtx 2007 full stock and factory co setting was 15. I decreased the setting to 5.

Is there anything else or a mod I can fit to fix this problem?

The only way to correctly diagnose AFR is with a Wideband sensor & data log and view the AFR across the whole map range.

It is very hard to read plug colours from fuel injected motors, unless you have a problem with very lean AFR up to 2% throttles I would reduce the CO1 to +5.

what exactly can be done/achieved with the diagnostic tool for my 2009 XTZ?
idle can be richend up, but can overall mixture be set higher?
is it worth getting it?
i just pulled my snorkel and will me taking the cat out soon.
different airfilter will come soo too.
engine's just a slight bit jerky in 2nd,3rd gear at 3500-4000rpm at steady throttle, i assume lean mixture.
AIS not blocked off yet.
bike rus pretty well otherwise...
got a pot meter 47K ohm attached now but can't seem to make much of difference, i read i should use a 1K ohm pot meter?
don't know if my model has an O2 sensor fitted?
tried changing TPS,turned a bit clockwise but ran rougher, so turned back.

thanks for any input :-)

Hannes (Belgian rider)

Surging / stalling problem
 

Hi all, I just bought an Xt660x 2005 model to use as a commuter bike, it came with Mivv titanium oval exhausts.

It has the problem of surging especially when running at low speeds through trafific or approaching roundabouts etc. It also backfires as soon as I loose throttle.

What do you suggest is the cheapest way to get a smooth ride? Current CO setting is at -5 and the idle revs is in the region of 1680 rpm

Thanks
Sam

PS. I live in Malta, for anyone who doesn't know it's a small island in the Med with normally high temperatures

Buy Kev's mod's.

Qill I need also the o2 eliminator or just the Kevmod?

Idle is high..1450-1500 rpm is the norm..

Have you got anything 'in' the left hand exhaust pipe?..in front of engine..it has an electrical connection...

If you have its your 02 sensor.

Have you thought of doing Kev's throttle mod?...

I have ordered the kev mod, once i install it I saw how the bike responds maybe i will need to do the throttle mod as well and check the tps....how should the reading of tps read?

The throttle mod is free and easy..its helps with twitchy throttle control.

Have you looked through the forum?????..ALL the information you will ever need is here.