Graph looks great, nice full throttle run, no O2 optimizer running in that graph.

As mentioned via PM I know how Dynojet get the 13.6:1 using their O2 optimizer, when fitting a PCV + O2 optimizer they are adding +6% more fuel in the open loop mapping area, this will move the closed loop from 14.1 to 13.6:1. This +6% increases the A/F ratio in the Map/Rpm tables in the open loop when you are cruising, the closed loop uses these Map/Rpm tables as part of its equation when targeting the closed loop A/F ratio. Testing back to back same Map/Rpm tables Dyno jets O2 optimizer & my O2 controller mine runs richer in the closed loop. With that extra +6% my controller will move the A/F ratio to approx. 13.2:1 in the closed loop.

 

I think I may have been too many beers into the install yesterday but I couldn't figure out where the smaller of the two connectors is suppose to go. I referenced the instructions, lifted the tank. Couldn't see very well what's under there. Traced the wire the larger cable goes into but it ends in a loom of a bunch of other wires taped together at the frame. Read post 50 of someone having the same issue, but didn't really pick up much from it. Help my dense brain.

 

The O2 controller loom slots into each side of the O2 sensor loom connector, the plugs only go one way.

 

That explains it. It's just bridging the socket in front of the brake. The length threw me off. Made me think it was suppose to replace the OEM loom entirely.

 

I now own a 2017 XSR900 and was wondering if this same 02 controller will work for the new bike. I took it off of my FZ-09 before selling.

 

Sorry that I haven't been following for a while. Please tell me: is it still the same problem after all those years, factory engineering and updates since my 2014 MT/FZ-09?

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The 2017 ECU's are Euro4 compliant & have a more stringent emission monitoring systems, with the older O2 controller it can now detect that the closed loop is not in the right range after a period of riding & brings on the engine light, the bike will then need to go to the dealer for the fault to be cleared or a scan tool used.

 

and the Euro4 standard also applies to US bikes? I'm aware of the special California emmisions specs but I wasn't aware Euro standard were implemented in the US.

 

So Kev, it's time to update the 02 sensor you prepared for the 04-05 models... and let the ECU light to do not turn on.

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I have already developed a new O2 controller for the later models Euro 4 emission ECU but have not brought them to market, there are a few guys using them around Australia.

 

Thanks for your feedback SD599, I was mainly saying 5th & 6th gears as those were the gears that I based my tests with on the Dyno when testing the closed loop & you are quite correct in your findings, either flash the closed loop off or control the signal.

I will PM you a trick for the closed loop so you can tune your bike better in the open loop across the whole range, I used to use this before I worked out how to control the closed loop.

With all motorcycle ECU's progressing to Euro 4 emissions the way the closed loop still works/operates is basically the same with a few more additions to monitoring, the monitoring of the variables is the big change to the circuit, the ECU looks at the wave signal & voltage differences & will pop the engine light on as soon as it sees any thing it does not like, before we saw no engine light just a fault logged if we interrogated the ECU fault memory, it has long & short stored fuel trims that are applied to the tables.

While in closed loop mode it makes adaptation changes to its fueling tables using the map sensor over RPM, it will ignore the O2 sensor during open loop and goes strictly off of the programed map, but the closed loop fuel trims adapted values are applied from that lookup table so even in open loop the ECU still monitors the O2 sensor for overly lean/rich conditions.

Euro 4 ECU's now use the O2 sensor during the bikes warm up faze once the O2 heater is at temperature to monitor AFR but will not rum the closed loop tables until 66 degrees C when the bike enters the closed loop.

 

What about a guy testing it here in Italy...????

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At this stage I have no intensions to be bring the 2016/17 02 controller to market they were built for a few of my friends who did not want to reflash their ECU's, I am knee deep with the 2017 KTM1290 tuning at the moment & have a few other model bikes to tune, may be down the track.

 

I just got mine in the mail today! Absolutely love it! Makes standard mode and A mode much smoother on my 2015 fz-09. Thank you for making this crucial mod. My bike definitely needed this. Much less twitchy throttle now and much more predictable. Really, I can't thank you enough.

 

Does this void warranty? I would like a less snappy throttle but I site want to flash the bike, or add a pipe just yet.
Also does this hurt the cat converter or anything?

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The O2 controller can be removed at any stage it is a plug & play mod, any modification (be it electrical or mechanical) to a motorcycle where they can prove that that added mod affected a failure will void a warranty, I have never had a claim rejected because of this mod in the 7 years that I have been making them.

 

It worked well for me. I used Kev's throttle mod too.

 

This sounds like a nice mod to make riding twistys a bit safer with the throttle.
Did it lower your fuel mileage?

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Not that I noticed. I have found that A mode is as smooth, maybe more so, than B now for rural roads.

 

Wow! I just purchased one from a fellow member I am quite exited to install

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Well I am putting a vote in for a 2017 model. Although they work already from what I read, albeit with a check engine light. I said I would never do a mod again with a nuisance light due to an unforseen mishap tuning my car.

 

Please help me understand something because i’m confused.
In simple words, o2 controller “works” when eco sign light on clocks?
Sorry for my english.

 

As far as I know the eco has no affects on the closed loop, even when the closed loop is flashed off the eco still appears in the dash, to answer your question the eco appears at part throttles & these are the areas the closed loop runs.

 

@kevxtx thank for your usefull posts! I have a question, I hope you can answer!

My 09 is a 2017 Euro 4, I fitted the full arrow exhaust dekat and K&N air filter so I decided to flash the ecu. I live in Italy, Sicily, so the only way to have my ECU flashed is to send it to a guy in north Italy; I don't know which software he will use, I think FT.

My biggest problem with the bike is the jerky throttle response in std and A mode, while driving on a mountain road. Especially in 2nd gear, 30-40mph turns, at full lean while moving from off-throttle to maintenance throttle. This is why the last season I drove all the time on B mode, because it felt soo much smoother.

So with the guy we were talking about the options we can use, ie. soften the throttle map on std and A mode on small throttle opening (less than 15-20%) and deactivate the throttle cut on deceleration; however my doubt are on the o2 sensor.
As far as I know at small openings is working the closed loop, so leaving the o2 active may keep the lean mixture and jerky response (btw the oem B map for me it's ok!); BUT with the o2 disabled while cruising ie. on the highway I think the fuel mileage would decrease due to the richer fuel mixture of the open loop. So I cannot decide to leave it active or disable... also, is there a risk to have the engine warning light on with one of the two configurations??

 

Flash the O2 sensor off, the O2 sensor is not for fuel consumption it is there for emission control flashing it off make little difference to a tank of fuel. Cant comment on if your engine light will be on after the flash as I don't know what software he is using on your EU ECU, I do know it wont be on using Woolich software.

 

thank you for the advice, man! it's truly appreciated!

 

Just ordered mine on eBay. Looking forward to it.

 

Hello Kev,
I would like to refresh this discussion although a lot of has been already said
I am from Europe and I am not sure, if your O2 controller is fully compatible with 2016 (first generation) MT-09? It should be EU3 emission class, no
ABS, no TCS. Will the dashboard emission sign appear or not? Thanks and sorry for my English

 

Check your ECU part number for comparability.

2016 MT09 ECU part number 2DR-8591a-40 is a Euro 4 emission ECU, my controller will work in correcting the closed loop AFR but the ECU can detect it & will put the engine light on permanently, I never brought my Euro 4 02 controller to market as there is no more demand for them as we just flash the closed loop off these days which is a better solution & I don't really have the time anymore to make them as I am working on newer models. I will be making them for the 2019 790 KTMs & have ordered a new 890R to play with when they arrive in Australia.

2013 to 2015 ECU's which I suspect is one of yours 1RC-8591a-00 /01 /11, 2DR8591a-00 /01 /11 ECUs are all Euro 3 ECUs, controller works fine no engine light on.

 

Ok, understood. Thank you for detailed info. I will checked it and in the case of correct ECU number, I will order one from Ebay. Thanks a lot

 

Will this controller work on a 2018 SXR90 the same engine but the ECU has a different flash.

 

I never brought my Euro4 02 controller to market as flashing the 09 ECU rewards the best results & 99% of the guys reflash the 02 sensor off, the current Euro3 controller on EBay will correct the closed loop AFR on your 18 XSR but will put the engine light on with a fault logged lean out of range, so the only side affect is an engine light on. I dont plan to build any Euro4 02 controllers. I have Euro 5 02 controllers out there testing with the KTM's at the moment.