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Kev's O2 mods.

528K views 1K replies 268 participants last post by  kevxtx 
#1 · (Edited)
2012> 690 Duke

My O2 controller mod might help a few of you guys out with that part throttle surging, I just really want to know if anyone is interested in these mods, if there is interest I will make them for you guys. A friend contacted me & ask can I make his new 690 run smoother around town & that is how this mod had come to the market.

The O2 controller mod will help with the surging in all map modes, it is designed to be fitted with free flow systems.

kev mod, kevxtx, kevmod, O2 sensor controller dongle adjustable fuel | kev mod

I make these controllers for.
Yamaha's
Kawasaki's
Aprilia's
And now 2012 onwards O2 controller mods for 690 Duke KTM's, adjustable fuel mod on the way just waiting for the OEM connectors.
 
#3 · (Edited)
It is plug & play no cutting of any wires, the mod is 100% waterproof.

I have been making them for a few years now for other model motorcycles & was approached by a friend complaining about the surging on the sport map on his 2013 690 duke, so the 690
O2 controller mod is born. As mentioned in my SMT forum post this is not a resistor mod it is a device that controls the output signal to the ECU in a square wave pattern.

I have stock of the mods & am ready to ship if anyone want to try one out, the mod is designed to control the surging at part throttle openings when cruising.

The price is Australian AUD$130.00 shipped world wide registered air mail post. I can be trusted 100% I have been an administrator of www.XT660.com forum the past 8 years & runs the www.ktmsmt.com forum as well & have a long standing credit in the biking community.

Payment via PayPal, posted next business day, if I see a demand for the mod I will make more & post them on EBay.:scooter: If you want one Pm me your PayPal details & I will send you an invoice.

Cheers
Kev
 
#5 ·
Nice one, Kev.

While this mod surely would come in handy for those without any other option for tuning eg. TuneECU it would also help if keeping O2 enabled for everyone.
Are we talking about stable throttle hunting/surging, or jumpy/twitchy throttle openings here or both?
Cause most of the jumpiness could be mitigated by either a throttle tamer or even editing the throttle profile behavior by software. I also gathered that reducing high F-L switch values that determines the switchover between 'Full' & 'Low' fuel maps helps to smooth out the bike. But all this should not directly address the closed loop process, don´t you think, which is completely separate?

Also have you found that the O2 controller would help cooling things off a bit since the bike temperatures are increasing quite fast when stuck in heavy traffic?

So since I think the are still some stable throttle surging left I could either go for your O2 controller or just switch the darn thingy off in TuneECU? I like to leave it on so it is adjusting A/F ratio a bit, even off idle load, or is this really pointless if the cat is removed?
 
#6 · (Edited)
The A/F ratio in the closed loop is kept at 14.7:1 my O2 controller keeps the closed loop A/F ratio around 13.6:1 the transition between open & closed loop maps is closed so reduces the twitchyness, the O2 controller helps with on/off throttle openings + the surging at steady throttle openings.

At the moment there is no tuning option with Tune ECU for 2012 > 690's, I do have an adjustable fuel mod for the 690 I am just waiting on the OEM connectors, the fuel mod will adjust both F & L maps in the open loop.

One advantage the O2 controller has over turning off the O2 sensor is the controller still offers better fuel economy than the sensor been turned off.

I am fully converse with Tune ECU & Tunelink Dyno programming software, I have built most of these maps for the SMT/SMR boys. http://www.ktmsmt.com/viewtopic.php?f=13&t=3770
 
#8 ·
Those of you technical enough & who regularly use the advanced map, this sounds like a good mod. I'm not sure it will be something I'll try any time soon, but what I can say is this: I've followed Kev on another forum, & his knowledge, expertise & general helpfulness are second to none - top bloke!

Recommended 100%!!!!!!!!!!!:thumbup:
 
#9 ·
I am having trouble comprehending the lack of interest here riders.

There are only two faults with our Gen4 Dukes (cannot comment on the others):

1. It won't go over 200km/h.
2. It stutters and shakes like an epileptic who's lost his medication if you ask it to coast along at a docile speed. (We know your solution Wiwwee).

If this mod achieves half its claims, expect me back here ranting.

Then I'll just need to work out how to get another 30 hp and I WILL have the perfect bike.
 
#12 · (Edited)
Still early days, at this stage I just want to see if you guys want this kind of mod for your bikes if the mod is no popular the mod will die off, as mentioned I have a basic adjustable fuel mod that can adjust the A/F ratio in the open loop mapping that will complement this mod, I am just waiting for the OEM connectors to arrive from the USA. There are a few 690sd's already running this mod in Australia, I made 100% sure this O2 controller mod worked on the 690 Duke before releasing the mod. I have full access to a Dyno & am a qualified motorcycle mechanic & test every mod I produce on the Dyno.

It is very easy to see how much it changes the fuelling, ride the bike with the O2 sensor connected, stop turn key off fit mod between the O2 sensor & ECU key on ride the bike again, stop the bike again & remove the mod & ride the bike again. Just a reminder this mod is for improving part throttle cruising it increases the fuelling in the closed loop map circuit.
 
#13 ·
Sounds very good, if this one is a big improvement, then I'll definitely look at the open loop system as well!
I think the bike is running a bit too lean at the moment. However, with the adjustable one I guess I'd need to dyno it to set it up properly?
 
#15 ·
My week is over. I have the O2 controller in my hand. I am going to pour a Scotch and head down to my garage and fit my new toy. It has been raining here incessantly and I have a mild flu. So don't hold your breath on a feed back report. Hopefully before the w/end is done.

Fcuk off rain.
 
#17 ·
No - it did not work. Still raining.

I am such a child. Despite having hung my bike up to fiddle, fit the 02 sensor and clean it reasonably thoroughly, I had to go out in the wet for a run. It was dark and damp and I stayed of the main roads, so it was hardly an ideal road-test: But I could feel the difference.

Anti pollution stuff has a lot to answer for.

On Kevin's Ebay website there are comments from those who have fitted the same device to different makes and models of bikes to our Dukes, work Kevin has done earlier. One comment said the the device made him a "better" rider, calming his riding style, I know what he means. Instead of accelerating and braking constantly, the bike now feels happy to glide along a sensible speed, excellent for traffic and commuting.

If you ride more calmly, aren't you less likely to use up fuel? Does fitting anti-pollution devices increase your fuel consumption over the life of the bike by making you ride more aggressively?
 
#23 ·
the the device made him a "better" rider, calming his riding style, I know what he means. Instead of accelerating and braking constantly! the bike now feels happy to glide along a sensible speed
Blasphemy !

Actually now your bike may be sad. Crying in the garage. Slowly dying inside.
It will develop an identity crisis and turn into a Honda scooter.
Go wheelie it immediately to start treatment.
 
#18 · (Edited)
Thanks for your short ride report, your comments are spot on that is the area the closed loop leans the A/F ratio out & the O2 controller corrects the signal.

I can answer your question to does the O2 controller use more fuel & the answer is it should not as you now have more torque available with the corrected A/F ratio, with a closed A/F ratio of 14.7:1 it is far from an ideal A/F ratio, at 14.7:1 you burn up most of the hydro carbons to keep the Greenies happy but at a cost of engine performance & fuel consumption.

An A/F ratio of 14.7:1 produces less torque than a A/F ratio of 13.6:1 which is the target value the O2 Controller aims for, more torque means less throttle opening at the same cruising speed.

I never promote any of my mods I let the riders give their honest aspects & views on the mods, most are good the odd one is questionable I will leave the judgment up to you guys. I make these mods as a hobby trying to find ways to improve fuel injections, the difference I have a Dyno at my disposal & can test any mod I want with before & after runs.
 
#20 ·
Would I be in the ball park of the truth here Kevin?

Your device would have little effect on tyre wear since it is really only relevant until 20% throttle. Rear tyre wear would be due to larger throttle openings than that.

But if you spend a lot of time commuting in the 0-20% throttle zone, could it be kinder to chain, sprockets, gearbox, cush-drives and other stuff; maybe even the engine? I found I used to ride the clutch an lot when scooting through traffic, just to smooth and settle the bike. Hopefully that's all behind me now.
 
#21 · (Edited)
The biggest thing when changing the A/F ratio to 13.6:1 in the closed loop is it allows for less hand movement throttle & clutch as it is easier to keep the bike cruising you are not fighting the fuel injection as much especially in the sport mod, with less on/off throttle movement there would be less on/off load on the chain & sprockets. I have never really thought about it but I would think it might make a marginal difference in chain & sprocket life, but there again you have a hooligan bike that loves to be revved & ridden hard.

This 690 motor does have quite a bit of drive line shunt when the motor is lugged around at low RPM's due it's crank to clutch & final drive ratios this is a Characteristics of it's design which we can only change the final drive sprocket ratio, I do think the bike is over geared & would go one tooth down on the front sprocket if I owned one. As for the fuelling it is just to lean in the open & closed loop maps for emission control like every other new bike out there, with the single cylinders & V twin motors showing the worst side affects of the lean A/f ratio's.
 
#22 ·
I am sure I will have more to say on Kevin's mod as I spend more time on the bike.

In short it is big bang for buck.

The roll on is much nicer. I have returned to the sports mode because the throttle control is appreciably smoother, but still has a very explosive feel about it. It feels like a well calibrated weapon, precise and sharp. It is quite user friendly all the way down to 3'000 rpm and I have my cogs geared up so the engine is more loaded on my bike at 3'000. If I geared down, as Kevin suggests he would do if he had a Duke, first gear would be pointless.

What are the specs on the bike you developed this on Kevin? Without specialised mapping, which I hope you will help me with down the track, my engine is about as highly specced as is possible. I think that with the extra punch from the cam etc, taller gearing is the way to go. I found that the bike settled a lot when I went from 40 teeth on the rear to 38.

The exhaust blows damp into my hand on idle, so I am pretty sure the bottom end of the rev range is nice and rich.

I cannot say yet if this will make me more or less responsible on the road. Yes - it ambles along like a well behaved commuter if you want it to. But because you can run it very nicely in sports mode, all that extra grunt is there to exit roundabouts in style.

The biggest excitement for me, besides how well it behaves, is being about to feel the tyre bite as you open the throttle. The roll-on shudder before the mod used to make it difficult to feel the rear tyre bite.

Thanks Kevin, very happy. More to come in time.
 
#25 · (Edited)
Boldor thanks for taking the time in giving us some feedback on the O2 Controller mod.

The bike I used is a 2013 690 Duke with Akra pipe with Standard mapping, the owner contacted me asking for help he wanted to ride in sport mod all the time but the surging was getting on his nerves, his 690 is running my fuel mod as well so we were able in increase the fuelling a little in the open loop which also helps with on/off/on throttle response & roll on's. Running the O2 controller by it's self does make the 690 nicer to ride. I will let you know when the fuel mods are ready & I will send you one to try.

Once Alan is able to get into the Can Bus side of things in these ECU's I will develop some maps on the Dyno using Tune ECU, so until then we have very options to tune these bikes.

If there is anyone in Brisbane who wants to try one you are welcome to pop over to my house & we can fit one for a test run so you can feel the difference.
 
#27 ·
Thanks for the offer we are all good at this time, all the development has been done, I have been able to work out what the 690 ECU wants to see in the closed loop circuit to correct the A/F ratio to obtain the smoother ride.

It would be nice for the guys in Brisbane to pop around to see if the mod is what they are looking for. I like to make my mods plug & play so no cutting of wires, if you like it buy one & you can leave smiling. SO an offer of try before buying.:santa:
 
#28 ·
Very interesting stuff Kevxtx!! I am interested in this mod.

I am a new 1 month old 2013 Duke owner and I love the bike. With just more power and better sound it will be perfect. The most noticeable thing I found on this is the jerkiness at lower rpm constant throttle position. I am very used to this since I have an 2008 Tuono which is much worse than the Duke but it would be nice to correct both both. Do you have the O2 control for a 2008 Tuono?
How does your dollar convert to usd? Any idea shipping cost to the US?
Keep us posted on the Duke fuel mod.

Baldor, any more testing done?
 
#30 · (Edited)
My O2 controller mod works on the Aprilia's DD750 & 1200 + the 750 Shiver, not tested it on the Tuono.

As every bike has a different setting in the controller I would need to use my Master Adjustable O2 controller + wideband commander to measure the A'F ratio in the closed loop while riding, I adjust the controller until I get the desired A/F ratio in the closed loop then build the mod to suite that model.

Do you know of anyone in Brisbane with that model bike & I will give it a go for you?

All my O2 controllers sell for Oz$105.00 + $25.00 registered international air mail postage. The US$ is stronger than the Oz$, Total = Approx at today exchange rate US$118.00 including postage.
 
#35 · (Edited)
I wonder how this would work on a 2013 690 R :euro:
The mod will work on any 4 wire narrow band O2 sensor, I am sending one O2 controller to the UK for testing on a 2013 SMC this coming week using the D's spec's. The limitations of this mod is finding the bikes for me to test it on to get that magic number of 13.6:1 in the closed loop. As mentioned I do this as a hobby & if my mods can help guys out then I am happy, I had this mod running on my 990 SMR back at the beginning of 2011 when there was no tuning device those days.

The Yamaha XT660X have been running them since 2008 with a slightly different version that could actually turn off the closed loop circuit but found those take to long to make & the guys fitting them found it complicated to install the mod as it needed to be fitted to the cooling system as well as the ECU, these days I only sell the latest type plug & play.

The O2 control mod has evolved to generation 4, the first three as shown below could turn off the closed loop completely then force the ECU to only run on the Open Loop map only.



Now we have the latest 4 generation which came out last year that controls the O2 sensors square wave signal to the ECU, XT660 fuel & O2 controller mods shown below.

 
#36 ·
Woooooo-ooooo. Muchly Excitement.

Pressure is being piled on by me to get into the ignition system Kev. My trackie mate on his 2010 is still laughing at me. I can tell by the way his helmet wobbles from behind as he takes off down the straights.

And I have twice as many spark plugs as him!!
 
#37 · (Edited)
Do you still have the cat fitted, as the 690 got a Leovince link pipe fitted yesterday to the Akra can & has made a nice difference from 4000rpm & above.

http://www.ebay.de/itm/KAT-ERSATZ-L...pt=Motorrad_Kraftradteile&hash=item27d45b5dcd

Someone might want the whole system.
http://www.ebay.de/itm/LeoVince-Kom...pt=Motorrad_Kraftradteile&hash=item1e7c31f1f6

Has anyone tried DNA's filter out yet? http://www.dnafilters.com/en/news/p...kt6sm13-01-for-the-ktm-690-duke-abs-2013.html

On my last XT660 a few years back which had a big bore + stage 2 cam I ran this air box.



The difference between the standard air box air flow & the stage 3 DNA air box.



.
 
#38 · (Edited)
My system is as follows.

Open box (from tuning kit) - K&N filter - up specced cam - stainless homemade bypass - Ti end pipe and Akraprovic silencer.

Presently using the Akraprovic map and your O2 mod. Stock front sprocket and 38 (stock = 40) rear sprocket.

I'd like a map for that system with the db-killer plug for the road, and one without for the track.
 
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