3 paid for at the last min & one the rider does not have the money anymore.

1/ Nate is first if you still want one I know you were undecided, PM sent.
2/ Garry 117
3/ tenyamman

sorry Garry 117.....!

Gary117 & tenyamman first off the list when I get some more stock.

Good news when I got home this evening I found out all the connectors have arrive 5 days early, so we are back in business again, PM's on there way Gary117 & tenyamman.

http://i201.photobucket.com/albums/a...psaf3ebb7c.jpg

Hmm I don't get this.. Is there many different controllers and eliminators?
Controller to eliminate the o2 sensor and controller to adjust the o2 sensor?

Which one did I buy? :P

O2 sensor eliminator mod (By Kev with the help of dazmatic)
 

There are O2 eliminators, which will do as its name describes, eliminate the O2 sensor completely; their other job is to stop an error light showing on the dash. An O2 controller still allows a reading from the O2 sensor to get to the ECU, but at a controlled pre-determined level, for example to gain a fixed A/F ratio of 13.6:1.

Kev's latest controller is the latter type device.

There is a big difference between an resistor type Eliminator & my O2 controller or Dyno Jets Optimizer, the O2 eliminators just don't work, have a look at the You tube clip of my XT660 with the O2 sensor unplugged with a resistor type eliminator fitted in the closed loop the A/F ratio is all over the place.

http://www.youtube.com/watch?v=ZwTfuwZZ848&list=ULK5ubpdHu3uY

Now look at the same bike with one of my first eliminator/controller mods, the air fuel ratio is stable, with my latest O2 controller you still get the stable A/F ratio but I can now tune the bikes A/F ratio in the closed loop to any A/F ratio setting I want & it will also adapt the tuning in the closed loop to fuel changes/blends .

http://www.youtube.com/watch?v=1Y9mqJtXtm4&list=ULZwTfuwZZ848

Hello everybody, just installed both mods (o2 controller and fuel mod) on my 2010 xtx and the results are very very good.
Just leaving the garage i noticed no surge at all and in the first meters i soon felt the bike pulling a lot stronger from lower revs.
At the end of the test run, i can say i'm really pleased with the outcome.
Money well spent!

Firstly welcome to XT660.com & thanks for your feedback. :team[1]:

Hi! :-) I ordered both the O2 and Fuel mod from the bay yesterday, I hope they come in soon so I can test them and give feedback! Those mods don't seem to be much known here in Italy.

Do they come with install instructions? I'm not very fond with wiring stuff, I hope it will be easy enough for me to succeed. Will let you know how the bike performs (stock XT660Z with DNA stage1 and iridium plug)! Cheers!

Yes.

You'll be fine.

I received the package today (thank you!) but didn't came with instructions, just the parts. Shall I search in the forums? Can't wait to try those mods!:glasses13:

Thank you!

PM Kev and he'll email you the instructions.

I Email all instructions the day I receive payment, this give you time to see how the mods are fitted & tuned. I have just Emailed them to you again.

Please check your SPAM folder as Gmail & Yahoo Email accounts reject most attachments & put them in the SPAM folder.:box:

Thanks Kev, I've received your last email!

I have a question :-) after installing both O2 sensor eliminator + fuel mod and tweaking the setting on the latter to find what works best with my configuration, shall I also tweak CO value and TPS angle value? If so, why? And are there any guidelines/advice on how to tweak those values after installing Kev's mods? I read the sticky threads wih great interest, but I fail to understand how they all make for different reactions in the fueling, since in the way I see they work they all seem to richen (or lighten) AF ratio. I'm sure I'm missing a major point here :-P

[QUOTE=Chenko;194072]I have a question :-) after installing both O2 sensor eliminator + fuel mod and tweaking the setting on the latter to find what works best with my configuration, shall I also tweak CO value No need to the fuel mod adjusts the A/F ratio across the whole fuel map & rev range. and TPS angle value No do not play with the TPS value 16 to 18 is standard? If so, why? And are there any guidelines/advice on how to tweak those values after installing Kev's mods? I read the sticky threads wih great interest, but I fail to understand how they all make for different reactions in the fueling, since in the way I see they work they all seem to richen (or lighten) AF ratio. I'm sure I'm missing a major point here :-


Why do we need this O2 controller.
There are 2 sides to a fuel map, closed & open loop circuits.

A Power Commander or any other type of fuel mod can only adjust the fuel map in the open loop, the open loop circuit is when the ECU sees sudden acceleration, any RPM above 4500rpm & all throttle openings over 20%, cruising or not cruising.

The closed loop is used for emission control, it comes into effect after a coolant temp of 70 degrees C, when the ECU sees a constant throttle opening of below 20% & below 4500rpm, the ECU takes voltage readings from the O2 sensor & will lean the A/F ratio out until it sees a A/F ratio of 14.7:1.

The resistor type Eliminators do not work we have proven this, at the time of proving they do not work Dynojet pulled all the XT660 resistor type O2 eliminators from their for sale lists.

The ECU constantly looks for 0 to1 volt square wave signal, by unplugging the O2 sensor & fitting a resistor it sends a constant voltage signal to the ECU, after a few Min's the ECU see this as an corrupt signal & then constantly switches the A/F ratio up & down, in this state the bike is not tuneable.

The only 2 types that have been proven to work are Dynojet O2 Optimizer & my O2 eliminator/controller.

By controlling the closed loop circuit we are able to reduce the surging when you are cruising, with one of the latest O2 devices when the ECU switches between the open & closed loop circuits the transition is much smoother as the A/F ratios are closer to each other, see table below.

Open loop for most HP & Torque= 13.2:1 Tuned by a Power Commander or one of my fuel mods.
Closed loop A/F ratio = 14.7:1 Tuned by the O2 sensor no O2 controller mod fitted is to lean causes surging, when switching from closed loop 14.7:1 to open loop 13.2:1 you can feel this surging at cruising speeds.
Closed Loop A/F ratio = 13.6:1 Tuned by Kev's O2 Controller, now with the switching between closed loop 13.6:1 & open loop 13.2:1 the bikes surging is greatly reduced.

This O2 Controller mod can be used on a completely standard XT as well any XT with extra filters & pipes, can be used with my fuel mods + PCIII & PCV.

The O2 Controller is only part of the equation to reduce the surging but is one of the most important ones in reducing the surging. A good fuel map for open loop tuning + a good chain & sprockets correctly adjusted & no free play in the rear sprocket holder rubbers. Do all the above & your bike will ride like a dream.

My Fuel mod adjusts the open loop mapping, it changes the voltage signal from the ambient air temp, the air temp sender is a negative temperature coefficient sensor which means the colder it is the more resistance is applied to the voltage signal, when my fuel mod is turned clockwise the resistance is increased so the voltage signal to the ECU is altered with more resistance the ECU sees this signal as a colder ambient air temp so increases the fuelling in the 3D mapping.

Last few days of the special.

http://www.ebay.com.au/sch/7416kevin...p2047675.l2562

Hi,

This morning Kev installed his Fuel mod and O2 mod into my 2010 XTR and fine-tuned it for me. My bike is now running brilliantly, smooth, can�t wait to hit the twisties.

Cheers and many thanks to Kev
:notworthy[1]:


And Merry Xmas to everyone on XT660.com

Nothing like a happy camper,glad you are happy with all your mods.:041:

I worked on a few different bike today, XTR, MT-09 & a 2013 Z1000.

Hi Kev, I'm experimenting with your mods (O2 + fuel mod) which I installed a few days ago. I have a stage1 DNA air filter + removed snorkel (which corresponds to stage2 totally as far as I understand). And having great fun btw!

Air temperature is cold those days ( 6 to 8 degrees celsius).
I'm fiddling with the knob in the 4 to 6 o'clock range.

So far I experience:
- different sound (due to snorkel removal) with lotsa more low frequency rambling
- seemingly more power in the mid range (3500 to 6000 rpm)
- different kind of vibrations, somewhat "more rounded"
- very little less on-off effect, but so little improvement I could be wrong here

Past 6 o'clock A/F ratio seems to be too rich, but that's only an impression I can't further demonstrate.

Surging is still there where it used to be: a bit better in the low gears maybe, but absolutely unchanged from 3rd to 5th gear. Engine still thumps violently when giving full throttle under 3000rpm, just as it did before. I expected this to be smoothed out, am I missing something?

[QUOTE=Chenko;195306]Hi Kev, I'm experimenting with your mods (O2 + fuel mod) which I installed a few days ago. I have a stage1 DNA air filter + removed snorkel (which corresponds to stage2 totally as far as I understand). And having great fun btw!

Air temperature is cold those days ( 6 to 8 degrees celsius).
I'm fiddling with the knob in the 4 to 6 o'clock range. That is about right. It is quite hard to actually feel 0.8:1 A/F ratio this is the max the fuel mod can adjust, I have built the mod this way because of riders over fuelling their bikes & causing other problems with a t00 rich mixture.

So far I experience:
- different sound (due to snorkel removal) with lotsa more low frequency rambling
- seemingly more power in the mid range (3500 to 6000 rpm)
- different kind of vibrations, somewhat "more rounded" The different engine load will make the bike feel different.
- very little less on-off effect, but so little improvement I could be wrong here

Past 6 o'clock A/F ratio seems to be too rich, it would be but that's only an impression I can't further demonstrate.

Surging is still there where it used to be: a bit better in the low gears maybe, but absolutely unchanged from 3rd to 5th gear. Engine still thumps violently when giving full throttle under 3000rpm, just as it did before. I expected this to be smoothed out, am I missing something?

The fuel mod corrects the A/F ratio from the hardware that has been fitted like your filters, if we don't correct the A/F ratio the motor runs on the lean side.

The O2 controller controls the A/F ratio when we are cruising or riding around at light throttle openings, you should be able to lug the motor around in a higher gear at lower RPMs with the O2 controller.

There are a few other things that make these bikes feel like they are surging & would be looking towards the below items to be checked.

1/ Worn rear sprocket dampening rubbers are biggest culprit, grab hold of the rear sprocket & move the sprocket back & forwards, there should be no free play at all, if there is free play it will affect the bike cruises causing drive line shunt making the bike feel like it is surging.

2/ incorrectly adjust chain too loose.

3/ stretched chain, lift the rear wheel off the ground & support the bike in the air, place you hand under the lower chain & lift it up to the swinging arm, now turn the wheel slowly if the chain forces your hand up & down your chain is stretched & will make the bike feel like it is surging.

Unfortunately, everything mentioned was already checked:
1) sprocket dampening rubbers are brand new (changed them with last servicing)
2+3) chain tension is regularly checked and it gets cleaned and lubed every 500 or so kms

It really IS an erogation issue.

I was expecting the two mods to solve the surging (as many stated in the forums they would) but they seem to not do that in my case.

I'm pretty sure I installed them correctly, but anyway I ask: would the bike start at all if I installed them incorrectly?
Perhaps it is an exhaust issue, being I use the stock one?

I really would like to get rid of the obnoxious thumps I get when I open throttle below 3000rpm. :-(

The mods will not get rid of the obnoxious thumps you need to block your AIS pipe, the surging that the O2 controller fixes is at part throttle when the bike is cruising at small throttle openings when the ECU is in the closed loop mapping. The Fuel mod corrects the A/F ratio for hardware that is fitted like stage 1,2,3 air filters or & pipes.

As everyone knows I offer a 100% money back on any of my mods, only one person has ever taken up the offer in 7years. You are very welcome to post the mods back top me tomorrow in the condition you received them in & I will refund you the money that you paid for them upon receipt of the mods.

No, I'm happy for the other achievements, I'm keeping your nice mods thanks! :icon_burnout[1]:
I'll get rid of the AIS then, back to the garage!! :-P

I am sure your problem is the AIS still connected & running with an open air box, let us know how you get on.

Blocking off your AIS

XTZ
http://www.xt660.com/showthread.php?...d=1#post101266

XTX & XTR
http://www.xt660.com/showthread.php?t=5544

Does blocking up the ais pipe reduce the hard thumps when using the throttle in a high gear?

I thought that this would only reduce back firing or popping?

I thought that too, and Italian T�n�r� owners in the forums seem to think the same, nonetheless I shall verify it first hand since Kev seems to know this engine better than anyone.

A question: to solve thumps below 3000rpm in high gears, could one just block with a wall stopper the air entrance on the side of the bike, or should the AIS be removed completely?

I am a little skeptical, As all the reports only seem to mention the popping. I was going to plug it up during the holidays but not sure now.

I have a tenere too. Does anyone know if it is essential to remove the tank to plug it up? I have nt removed it yet on the tenere but I've hated doing it on all my other bikes. That dreaded fiddly fuel line. I know I'm going to end up shouting at the fuel line .

I blocked the AIS on my Tenere , i ended up removing the tank as access is very tight .

I know 100% on the X & R models when you are cruising around 3000 - 4000RPM or just opening the throttle with an open air box with the AIS system connected as standard, the AIS valve opens at this time for emission control you get an exhaust pulse wave back into the air box, sounds like a beating drumming sound, blocking the AIS pipe eliminates this noise as well as the popping back, the reduction in popping back depends on the year & ECU fitted to the bike.

If you have the snorkel in on a standard air box the AIS intake noise is greatly reduced & you would not hear any intake noise frrm the exhaust system.

No need to remove the AIS system just block the intake pipe as shown in the link I posted.

is it really possible to accelarate the Ten hard below 3000rpm in 4th and 5th gear without the chain slapping like mad? My XTR (same mods) certainly doesn't like it and i didn't expect the fuel mods to cure that.

#O2 controller update#

Guys I have the very first case of possible water entry into the connectors of a O2 controller with no damage to the bike, can I ask for everyone who has a O2 controller to use electrical tape & tape up the connectors & wires to the connectors & to make sure they are not exposed directly to the rain.

I buy the best connects that money can buy & surposed to be water proof, I have sold huindredes of these controllers & not had a water problems before, I react to things like this straight away.

I have done some water testing this morning & they seem to be fine with the connector completely submerged in water, the mod box is epoxy together so should be fine.

I have changed the installatiuon instructions to say the connectors need to placed out of direct rain & taped up. I will apply epoxy to all future mods where the wire enter the connectors.

Thanks Kev

Phew looks like I jumped the gun the O2 controller was not the guys problem, there was NO water entry into the mod so back to 100% success rate. :drool[1]:

Never mind I would still recommend you insulation tape up the wires & connectors if you ride in very rainy conditions. I have done some water tests on the connectors over the last 24hrs with the connectors completely submerged in water with no leaks into the connectors after 24hrs so looks like they are doing their job.

http://i201.photobucket.com/albums/a...ps8e81f950.jpg
http://i201.photobucket.com/albums/a...ps6931520e.jpg
http://i201.photobucket.com/albums/a...ps46fd4d7e.jpgI

my only concern Kev is what have u been drinking your beer out of during testing

That is my Rum & coke mug, luckily I have a few of them.:coastguard:

Guys I have just reduced the price of my mods on EBay if anyone is interested. http://www.ebay.com.au/sch/7416kevinh/m.html?item=141188157254&ViewItem=&rt=nc&_trksid=p 2047675.l2562

I'm interested kev...would it be easier to buy straightfoff e Bay or from yourself here.

BEing an XT Supporter, if you buy by pm from Kev directly you get a discount.

As of last night the O2 controllers on Ebay were discounted for the next two weeks, for supporters I can take the Ebay fees off the cost if bought directly from me.