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O2 sensor and Tune woes

7K views 20 replies 7 participants last post by  Pottsey 
#1 ·
Hi All,

Looking for some of your brilliant guidance with my 2014 Bonnie.
We had the dealer fit a set of Arrow 2 into 1 pipes late last year and everything seemed great.
Last month, bike became sluggish, and fuel usage went through the roof - full tank in less than 130kms!!!
Dropped it back and they said was a tune issue, have fixed it up all sorted.
Rode bike around and then home that afternoon, awesome!
Next morning early in the cold, rode like an unpredictable dog... As soon as the weather was warm again perfect!
Dealer suggested that we should get some O2 sensor eliminators from Danmoto and some block offs for the pipes.
Ordered the parts, as well as the AI removal kit from Triumph Performance parts in Melbourne, The AI removal all went well seems fine.
Plugged in the Danmoto O2 eliminators and instantly the Engine light is on, but the bike is running 1000% improvement.
Dealer is telling me that they cant simply disable the O2 sensors in the ECU, even though I read this is a better option than using the O2 eliminators?
So Im left with why is the Engine warning going on? Is one of the new elimators faulty and how could I check and can the ECU be programmed or not?!
:|
 
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#3 ·
Ah, that could explain some of it, but in which case wouldnt advising me to get the eliminators be a legal issue as well? I guess at the moment I need to see what they are going to sort out or if I am going to have to try and get a cable and the Tune ECU and do it myself...
 
#4 ·
I'd guess they must have turned on the ignition switch after unplugging the O2 sensors but before the eliminators were fitted. The ECU would instantly detect the missing sensors and turned the light on.

Once they're fitted and if they're the correct part, the ECU will be "fooled" into believing the sensors are now OK and the light should go off by itself after 3 cold/hot cycles of the engine.

A cycle is defined as:

A single warm-up cycle is deemed to have taken place when the following criteria have been met:

* The coolant or, in the case of the Bonnies, the oil temperature, must be raised to 72ºC [162ºF] or more.

* The coolant or oil temperature must have risen by 23ºC [74ºF] or more from its start temperature, when 72ºC [162ºF] is reached.

* A controlled power-down sequence must take place [i.e. shutting off using the ignition switch.”


In practice just using it normally for 2-3 days will do it.
 
#5 ·
Thanks for the tip on trying to clear the light.
I fitted the O2 eliminators myself and the bike was off the entire time with the keys out until after they were installed.
My sneaking suspicion is that one of the eliminators is no good. Might be yet another trip down to the dealer to get them to clear the light and check the error might prove my theory and or what the problem is...
 
#11 ·
Forchetto, I'm having the same issue. Had the dealer shut off the O2 and the AI, I've had the AI removed for some time. After the dealer "shut it off, I had better performance, but hadn't physically removed the sensors yet. Just removed the sensors using the British Customs plugs and now the check engine light is on. Should it go off after the cycles you described, or do I need the resistors you posted?
 
#12 ·
By British Customs plugs , do you mean the threaded plugs that fit in the downpipes instead of the sensors?

If so, you'll also need either the 330 Ohm resistors across the sensor heater wires, the Brown/Pink and White wires or the sensor check engine light function cancelled using software such as TuneECU.
 
#14 ·
Hobby electronics shops will have the resistors but then you'll need some sort of terminals to match the vacated O2 sensor connectors, heat-shrink sleeving to seal off, etc. Here's my thread on O2 disabling, done years ago before software was available:

http://www.triumphrat.net/air-coole.../143011-o2-sensor-elimination-and-bypass.html

The easiest way is to obtain some ready-made plug and play connectors that come complete with the resistors. Once fitted the MIL light will remain ON for a further 3 cold/hot cycles and then go off by itself. A search for Bonneville O2 sensor eliminators should turn up lots of devices, like this one from British customs:

http://www.british-customs.com/triumph-dynojet-o2-sensor-eliminator-plug.html

Check out a few though, vastly different prices for the same component, like these ones from Lossa engineering which are obviously exactly the same as the above, but cost a lot more...:

http://www.lossaengineering.com/pro...uxton-dynojet-o2-sensor-eliminator-plugs-pair
 
#16 ·
I'm an Apple guy too Joe, and have been since they invented computers, but it's worth getting a copy of Windows and installing it on your Mac via BootCamp. That way you can just re-boot the computer and it becomes a hideous Windows PC, but it gives you access to TuneECU and any other Windows only software you might fancy.

Incidentally, I use VMWare's 'Fusion' as well which allows you to have both operating systems running at the same time but, although it will run TuneECU it wont connect to the bike in that mode. I have to reboot with Windows only to get it to connect.
 
#18 ·
Thanks Patrckcol, I've used both Parallels and Bootcamp on my mac before, I just don't have the stomach to reconfigure my Mac for this one application. I'm going the Dynojet Eliminator plug route for now. If I keep tinkering, as I probably will, I may have to get a cheap PC dedicated to the task.
 
#19 · (Edited)
Forchetto, thanks for all the help.
So, outcome was that the danmoto plugs dont work as they are only having the resistor over the sensor wire and not the heater - which definately seems the MIL warning issue.
After having the boys at work knock up a 'repalcement' from your instructions we seem all good.
Im still not 100% happy with the tune that on it, so I want to play with that a little.
Can anyone recommend which cable to buy in AUS for the TuneECU software? There are so many variants and big price variants too!

Thanks again guys for all the help.

Next project once this is running nicer is to wrap the pipes!
 
#21 ·
Hi Guys,
Been a while in between waiting for the cable to arrive and me being away.
So, the Dan moto eliminators didnt work - looks like they have the resistor over the wrong wires for my model bonnie.

Plugged in the cable and run TuneECU. The 'correct tune' that the dealer had installed was 20731... Funny how this tune is for the Triumph Production pipes not my Arrow 2 into 1 set!
Downloaded and installed 20504 - Arrow 2 into 1 tune and reset the adaptions (great info on another thread in here on how to do it by the way) and viola! Bike is back to running perfectly (well close enough to) again!

After some reading I have left the O2 sensors connected as the 20504 tune relies on them to run correctly.

Now if I can sneak it past the wife I might try out the TTP Breathe intake, air filter and one of the TTP custom tunes - any feed back is greatly appreaciated!

But thank you all so far for the help! I rode my bike this week for the first time in months without fighting with it!
 
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