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Lets hope some guys come forwards to test it otherwise it will never get out of the testing box. The mod is working successfully on the Aprilia's & KTM's. |
Looks great. Iv'e got a stock xt660x with Staintune pipes only.
Iv'e also got DNA 1+2 filters waiting to be fitted. Been waiting for next pay day before ordering one of your fuel mods. I'm willing to pay extra for the O2 eliminator as well if you can ship that. More than happy to give feed back on both. |
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They starting to roll out, the 2012 O2 Kev Controller mod.
Normal air mail 1 X O2 controller = Australian AUD$102.00 + postage cost to your area. I have a few O2 controllers ready to go. http://i201.photobucket.com/albums/a...202011/a-2.jpg |
Tested Kev's plug and play O2 eliminator
Hi Everyone,
Iv'e been riding with the new O2 eliminator fitted for the past week. I tested it on my stock standard (Staintune pipes only) xt660x and then with DNA filters and fuel mod etc. Here is my review ... Day 1) Received the O2 eliminator and fuel mod in the post about 2-3 days after ordering it ( Thanks Kev ). Day 2) Fitted the O2 eliminator. Took 5 mins to plug in then about another 30 mins figuring how/where I was going to tie the small black box that comes with it. I eventually cable tied it to the existing O2 sensor bracket next to the cylinder head. I went for a 30 min ride around where I live and tried really hard to get into the surging zone but hey presto no surging. Good result! A true test would be my usual 1 hour commute through Sydney traffic each day. I then removed the snorkel and went for a short ride. Could feel a very small difference with response and still no surging. I then fitted the DNA stage1 filter. Again a bit more power and no surging. I then fitted the DNA stage 2 filter as well as Kev's fuel mod. Took it for another spin and WOW, bike has definitely got more power. In the right rev range any gear, open it up and you start putting serious distance between yourself and anyone following. Very happy! I was thinking about drilling holes in airbox as well but decided against it. Day 3) Commute to work. I have some sections where I am sitting between 50 and 70 kph constant throttle. Before, this is where I would pick up the surging, ( f@%@ing annoying ). Now, there are times where I get into that same zone and you can feel the bike trying to surge but it is hardly noticeable (much smoother). In other words I would say the surging is not 100% eliminated but 90-95% gone which I would say is a big win. With the filters and fuel mod I would say it makes riding in traffic easier. I am more confident of taking gaps between traffic as I know the power is instantly there. Well, there's it folks, my 2 cents worth. If you are interested in getting a fix for the surging problem then Kev's mod will do the trick. |
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All boxed up ready for posting in the morning.
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I took what you said to me last week into account & the latest batch has a different box to make it easier to zip tie the box to the bike. http://i201.photobucket.com/albums/a...ntroller-1.jpg |
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It is.:mixed-smiley-014:
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What are the differences between this new O2 Controller and the O2 eliminator mod? Is it worth to pursuade the new one because it's better? Or the only difference is that you don't have to cut any cables, as it is on the previous mod?
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+1 you got it.
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The first batch is almost sold out only have one left, should have the second batch ready in 10 days time, just waiting on the OEM connectors from the USA.
I did not expect so much interest, if the interest is there I will keep making them, the mod will make your bike ride smoother. |
And it works great, thank you Kev.
Only been out for a short ride with it so far but threw a few different conditions at it in that hour. The only time I could detect anything was for example when in 3rd at 60 ish kph under no load (ie; higher rpm lower gears on declines trying to maintain a constant speed) and if felt like it was just trying to surge but didn't really. It is a huge improvement over standard and I am a happy customer. I will give more riding feedback when I can (our new baby beagle is slowing me up) and try some more roads and conditions. Again a big thanks Kev you have turned a great bike into a brilliant one:notworthy:. |
Got mine instaled...
Works great.. no surgeing.. Far nicer to ride around town in traffic... Thanks Kev:thumbsup[1]: |
Thanks for your feedback guys, I always ask for riders to give their own feedback with my mods good or bad, this way I have a bigger audience & the mod promotes it's self.
Out of all my mods the O2 Controller mod is one of the easiest to fit, but is the most complicated to make. |
Next batch of OEM connectors arrive yesterday & have made up 10 X O2 Controllers today.
If you want one send me a PM & I send you the Payment details. Australian AUD$95.00 + postage cost Worldwide. http://i201.photobucket.com/albums/a...x/DSCF4446.jpg |
TL,DR: it works, buy it.
So yesterday I received my O2 controller, Kev mod and stage 1+2 DNA filters - yes it was truly like christmas :-) I went ahead and fitted the O2 controller alone as I wanted to test that alone (only change one thing at a time, eh). 15 mins later I was on my way - yes its that fast to fit, easy peasy. I zip-tied it to the fan as I didn't wanted it dangling from wires (see pic below). The low throttle stutter you get from this bike stock is just unbearable. You get physically shaked and you really need to hold tight - its very uncomfortable. That is gone. Not totally but the O2 controller is a huge improvement. You will still experience slight stutter occasionally, but its nothing like before. Its a no brainer and definitely a must have. On a sidenote I think this mod actually makes me a better rider. Before fitting this I tended to run too fast all the time to keep the bike in open loop mode so I avoided the stuttering (not in towns though). Now on mainroads I can run 70-90Km/h with very low throttle and its just smooth - like it should be. Thanks for the new bike kev :-) http://oi47.tinypic.com/1zpi236.jpg |
Thanks for your feedback, glad you are happy with the mods.
I am back from a week of 4 days of mock tests of the past 4 years of studies that I have been doing, my brain is completely drained. Then todays finals I wrote 6 X 1 hour papers of practical & theory in one day one after the other, it has been a very stressful week for me, I will know the results in 2 to 3 weeks time. I will work through all the Emails & PM's from this week, there are 136 all together + forum questions from a few different forums. |
Which one?
Geeze I'm a dumb-ass, I admit it. :toothy11: New to the forum and have been tryin' to follow the threads on these mods - but now I'm just damn confused. Obviously Kev has kept refining his kit over the years but I'm just not sure now what I need for my new R... It's a standard 2011, no PC, snorkle removed, CO adjusted up five, standard cans for now.
I'm assuming the new O2 controller supercedes the O2 eliminator? What about the Kev fuel mod - do I need one of those too or does the new O2 controller trump that too. Supamanaint says the first thing I should get is a O2 controller, but is that all I need with this mod, and is it worth it since I don't have better cans or a PC?? Do I even need a PC once I've fitted the O2 controller? Sorry, Kev, you must be pulling your hair out trying to bring numbnuts like me up to speed - so just give me the short answer if you could be so kind. Thanks... Dan |
Dan no question is dumb if you don't know the answer.
We have 2 parts to the fuel map, Closed Loop & Open loop, keep this in the back of your mind. From 2007> the XT660 X & R's come with an O2 sensor for emission control, the O2 sensor has nothing to do with good fuel consumption or max HP it is quite the opposite. The O2 sensor trys to keep the A/F ratio when you are at constant throttle opens to an A/F ratio of 14.7:1, at this A/F ratio the bike is very lean & runs at reduce power & emissions to keep the Greenies happy, most motorcycle engines do not like an A/F ratio of 14.7:1 & respond with a surge. So what we do with my O2 controller mod is to trick the Engine ECU into thinking the bike is running very lean, the ECU sees this lean voltage from the O2 Controller mod & increases the fuelling to approx 13.6:1 which where we get the best fuel consumption. This part of the fuel map is called the Closed Loop. In the Open Loop our XT's run between 13.6 & 14:1, we get the most HP & Torque for an A/F ratio of 13.2:1, this part of the fuel map can be adjusted with a fuelling device like a Power Commander or one of my fuel mods. A Power Commander would alway be my first choice if you have the funds. So to answer your question you can just fit a O2 controller on your bike which will correct the lean closed loop circuit & the bike will ride smoother, you would get the best results with a fuelling device + O2 Controller, with both mods you are correcting the A/F ratio in the Open & Closed loops & the bike will respond well. If you are after a O2 Controller mod with or without a Fuel mod I can post next Business day. |
O2 controller
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There are no stupid questions... only stupid people." (Mr Mackey from South Park)
Hey thanks, Kev. Great explanation. :YouRock: My previous bikes have all had carbs so fuel injection was a leap of faith for me. Anyway, I'm convinced. I want one. I'll PM you to discuss the handover... Cheers mate, Dan |
Pm sent with details.:Pyshic_C5UYG8:
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I've been following this thread and that explanation made a noob like me understand what the new o2 controller is all about. So my question is do you have any left? In that case I would like to have one. Does the O2 come with fitting instructions. I also have another question. I have recently bought a second hand PCV that was fitted on a raptor 700. I'm quite sure I have read somewhere that this one would fit on the xt660z. Is that right? The number on the PCV is 22-002. Thanks in advance! |
5 left of the second batch, PM sent, the O2 instructions can be downloaded from the link below & I do send the same instructions with the mod. The Raptor PCV's do work on the XT660's there are a few guys runing them.
http://dc415.4shared.com/download/E80ZYZVH/The_Kev_2012_XT660_O2_Controll.pdf |
O2 Controller success
I've already PMed Kev to let him know directly, but I'm posting here too so others get my feedback.
I've fitted the new O2 Controller on my 2011 R - took all of 5 minutes to plug it in and mount it - and took it out for a ride. I was really trying hard to test it at the usual constant throttle positions and rev range where the surging is really noticeable � 2nd & 3rd gear was where it felt worse but now with the O2 Controller it feels great! Heaps smoother no doubt. I think I can still detect a slight surge every now and then but nothing like before... and I mean I was tryin' real hard to notice. My bike is set up as follow: standard cans, standard air filter, snorkle removed, C1 adjusted up 5 from original. I haven�t done anything to the open loop yet. So I give it the big thumbs up :coolsmiley: This is how it should run straight out of the factory. Great work Kev! |
Thanks for your feedback Dan, everyones feedback is valued good or bad.
As long as there is a demand I will keep making the O2 Controller mods. Dan Up your Co1 by another 5 this will help the part throttle mixture in the open loop fuelling, also make sure there is no free play in your rear sprocket holder & your chain is not to lose as these items also effect the surging. I would also recommend doing my twist grip mod this will give you more control at small throttle openings. I still 4 X O2 controllers in stock & expect 10 OEM sets of connectors in two weeks time, I have bought up every connector for my US supplier & now have a further 10 set of connectors on back order. If anyone wants one don't leave it to long as the connectors are in short supply from the manufacture. |
Been using the dynojet "regulator/modulator" (not the optimizer) for the last 3 weeks on my 2011 XTX, and it has been driving me insane with heavy surging at around 4500rpm.
Got the eliminator from Kev 2 days ago, and all i can say is wow, its a dream to ride the bike again, no more surging in the 4500rpm area (I have tried everything to get it to surge but with no result). Picture of the dynojet mod i was using before Kevs eliminator: http://i.imgur.com/5R272.jpg Dont have the exact word for it but its bad. I can definitely recommend this eliminator to everyone with a 07> XT Thanks alot Kev once again for an awesome mod. |
Nice one Nic thanks for your feedback, we now have a comparison against the Regulator/Modulator Verse my my O2 controller mod.
As mentioned in our Email my 2012 O2 eliminator works slightly differently to the O2 regulator, their signal generator emits a fixed pulsed wave signal, my O2 eliminator uses the O2's sensor voltage & alters the output voltage from the sensor in a square wave, the mod then corrects the input voltage & sends it to the ECU according to the A/F ratio in the closed loop, Dyno jets Regulator is a fixed input signal & is not adjusted by the A/F ratio in the closed loop. Dyno Jets latest O2 Optimizer works on a similar principle as my O2 controller. |
Well Kev, I have now put over 1000km with your O2 controller fitted and all is great.
I have ridden in many different conditions and on many different types of roads from dirt to open country and twisties (also towns and traffic). You can still find a little surging if you go looking for it, I find it in the lower gears at lower speed with mid rpm (2nd or 3rd around 30-40 ish kph) but it is not to bad (by the way I only notice this in town or at some road works with traffic). There could be other factors that make it seem worse than it is, like drive chain slack :smirk:. As I said, if you go looking for it you will find it but on the whole it is so much of an improvement (90%) over standard I cannot fault it at all. This is in my opinion the best mod you can do to these bikes and also the best value for money mod you can do. Well done Kev and a big thank you for this mod, it has made this bike even more of a pleasure to ride, cheers. Shane |
Thanks for your feedback Shane.
The O2 Controller is only part of the equasion to surging but is one of the most important ones to reducing the surging. A good fuel map for open loop tuning + a good chain & sprockest correctly adjusted & no free play in the rear sprocket holder rubbers. Do all the above & your bike bike will ride like a dream. I would also add my twist grip mod to the list for better small throttle opening control. http://www.xt660.com/showthread.php?p=154983#post154983 |
O2 Controller now on Ebay. If bougth via PM I will post world Wide Australian AUD$95.00 + postage cost to your country.
Hope you guys don't mind me using your feedback, it does help get exposure to the forum & my mods. http://www.ebay.com.au/itm/Yamaha-XT660X-XT660R-XT660Z-XTX-XTR-XTZ-O2-Controller-/130785899498?pt=AU_Motorcycle_Parts_Accessories&ha sh=item1e737273ea |
Just got my bike remapped after fitting Kevs new eliminator mod.
It runs so much smoother now, the a/f is 3.2-3.6 over the whole range. With the dynojet modulator it had a dead point at around 4500-5500rpm, that is finally gone now. Unfortunately I havent been able to enjoy my bike as much as i wanted to since the bike got fixed the last couple of days due to rain.... Once again i can really recommend people to get one of these mods with a powercommander. |
Thanks for the feedback Nic you are the second person to Dyno tune your bike with a Power Commander + my 2012 O2 controller mod, at least we can say it works well enough to fool the Dynos computerized software & you can build a stable fuel map with it connected, as mentioned in our Emails please can you send me a copy of your PC map.
I am very happy with the results of the O2 controller, the funny thing is I new how to make this mod back in 2008 but did not pursue it as I wanted to turn the O2 Closed loop off & was not interested in controlling the closed loop so really never finished & tested it completely. Then the KTM boys were asking how to control their O2 closed loop circuits & the mod came live again. Same mod now applied to 3 different motorcycle manufactures. :Tennis_ABHMXO: We will see how long it takes for someone to copy it.:lurk: I still have 2 X O2 controllers in stock if anyone wants one, or off Ebay. http://www.ebay.com.au/itm/Yamaha-XT660X-XT660R-XT660Z-XTX-XTR-XTZ-O2-Controller-/130785899498?pt=AU_Motorcycle_Parts_Accessories&ha sh=item1e737273ea |
I bought one and on a completely stock 08 (motor wise) she's made it a lot nicer to ride. Hardly any surging at all, made me realise how much I had been riding around the problem by staying out of the midrange at low throttle openings.
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Thanks for your feedback, it is great to see the O2 Controller improves the ride on a completely standard XT.
I spent a few hours last weekend & 10 hours today making up the next batch of O2 Controllers & I still have an hour or two left. My supplier of the small boxes ran out of the original size boxes so this next batch will have a slightly different box with the exact same internals. The supplier of the OEM connectors has also run out of stock & the connectors are on back order for me as I bought his entire stock & have used all of them on this latest batch, I am not sure when they will have stock again they have been on back order for 3 weeks so far. So those who snooze will have to wait a bit as I have no time line for the next batch. They can be bought via PM or off Ebay. http://www.ebay.com.au/itm/130780380438?ssPageName=STRK:MESELX:IT&_trksid=p39 84.m1555.l2649 http://i201.photobucket.com/albums/a...ps47146c66.jpg |
Done 600 km with O2 Controller
Just reporting back that the most fun I've had on my bike has been since installing Kev's O2 Controller. Such an easy fix for this long term issue. I totally recommend it.
One related thing, Kev... I've been reading back treads of the forum and have been surprised by the few people who actually say lowering their CO1 level by 10 from standard actually improved their ride. I wonder whether by lowering their CO1 levels (and therefore leaning the A/F further in open loop)they were actually better matching the low rev open loop to the standard lean closed loop - making it feel like the bike is smoother because the switch between open and closed loop wasn't so dramatic? Of course, that would mean the bike is still running too lean overall and much better performance can be achieved by fixing the closed loop with the O2 controller and upping the CO1... Anyway people, get a O2 controller and see for yourself! |
Nice one Dan.
Running a to lean or to rich mixture can make these XT's surge at part throttle. I would say your thinking is spot on to an extent but you will loose some Torque & HP with a lean mixture. CO1 can only adjust the fuel mixture up to around 2% throttle openings or there abouts which I call part throttle openings, after that the ECU runs on a map & the CO1 adjustment make no difference to the A/F ratio at all. Any number over a TPS reading of 18 the ECU will run on the pre- programmed Yamaha map, in the early days before O2 sensors I used to say to riders they should adjust their TPS to around 16 so we can adjust the part throttle opening A/F ratio with the CO1 adjustment. |
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