O2 eliminator..? Ebay. Build your own.

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Towbar
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O2 eliminator..? Ebay. Build your own.

Post by Towbar » Wed Jul 23, 2014 5:57 am

Oxygen lambda o2 sensor eliminator Complete kit KTM 1290 Super Duke R
CURES the SNATCHY TROTTLE and MID-RANGE SURGING..
$48.00 Aus from Greece()

Has anyone tried these?
How would they work?
Am i correct in assuming that because they are resistors there would be no error codes...?

It seems too simple to be of any use.. :?: :?:

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Re: O2 eliminator..? Ebay

Post by kevxtx » Wed Jul 23, 2014 10:49 am

They do work in reducing the surging, I did all the test a few months ago with both versions I make. There are two ways to sort the closed loop mapping, 1/ by controlling the O2 sensors voltage, 2/ fixing the closed loop voltage to around 14.2:1 with resistors, You can make bo the O2 eliminators for less than $10.00 a O2 controller would cost $125.00
if you want to make your own resistor type O2 eliminator this is what you need.

I buy all my connectors from Corsa, I normally order a few hundred at a time but you can buy one at a time you will need two of them http://www.corsa-technic.com/item.php?i ... ory_id=105 they come with the 4 pins & seals you need.

You will need 2 X 1/2 watt resistors for each eliminator= 2 X 330 OHM & 2 X 1meg (1000x1K) OHM resistor (1000 X 1K).

My O2 controller works very differently to a O2 eliminator they correct the voltage from the O2 sensor & keep the A/F ratio around 13.4:1 to 13.6:1 in the closed loop circuit, I went no further with my prototype for the 1290 as I knew once a PCV came there would be little demand for the mod. The O2 controller is quite a successful mod & have been making them for a few years now for 4 different manufactures, the 690 Duke is one of the popular ones; http://www.ktmforums.com/forums/duke/17 ... r-mod.html

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Re: O2 eliminator..? Ebay. Build your own.

Post by Bootworks » Sun Aug 24, 2014 4:13 pm

You will need 2 X 1/2 watt resistors 1 X 300 OHM & 1 X 1meg OHM resistor.

The young fellow at 'Radio Shack' hadn't heard the term 'meg OHM' before...

Edit: They seem to call it a 1M Ohm here in the U.S. (1000 X 1K)

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Re: O2 eliminator..? Ebay. Build your own.

Post by jcsh » Tue Feb 13, 2018 10:43 pm

Hi All
I’m currently hating my 1290GT because of the surging at constant throttle.
Searching old threads led me here so decided to make up something from bits and pieces at hand.
I managed to scare up a 1 meg ohm resistor and a 330 ohm. Found the easy connector on the rhs of the bike and plugged it in

Went for a ride and it was indeed a GREAT improvement. Even though only the rear cylinder modified. Brilliant! But unfortunately the MIL lamp is on.
In the text here it says use a 300 ohm resistor. The pic shows a label with 330 ohm.
I’m wondering if it should be 330 ohm or whether there’s another problem?
Any ideas ?
I ask because I’d like to get it all correct before I rip into taking the tank off etc for the front cylinder mod :)
Cheers and thanks for all the pointers guys, and especially Kev of course
James

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Re: O2 eliminator..? Ebay. Build your own.

Post by kevxtx » Wed Feb 14, 2018 3:23 am

My error should be 330 ohms for the heater, I have corrected the mistake. :D

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Re: O2 eliminator..? Ebay. Build your own.

Post by jcsh » Wed Feb 14, 2018 5:53 am

Thanks for the quick confirmation Kev. Most appreciated.
I’m wondering why my engine check light has come on. I swapped the traitors back out on the cylinder they were plugged into. And it’s still on!
Maybe it’s just coincidence or has anyone else experienced this?
Cheers
James

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Re: O2 eliminator..? Ebay. Build your own.

Post by jcsh » Wed Feb 14, 2018 5:54 am

Haha I typed resistors and it decided I meant Traitors :)

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Re: O2 eliminator..? Ebay. Build your own.

Post by kevxtx » Wed Feb 14, 2018 8:19 am

What I have found with my O2 controllers is they work fine on the Euro 4 emission ECU's in controlling the closed loop AFR's but the ECU can detect that the O2 sensor signal has been tampered with & put the engine light on, I suspect the O2 eliminator will be the same that it can fix the closed loop AFR but can be detected as well.

I reflash off the closed loop on all the Euro 4 ECU's that I flash.

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Re: O2 eliminator..? Ebay. Build your own.

Post by jcsh » Wed Feb 14, 2018 6:28 pm

Ok Kev you’ve just exceeded my skill set!
When you say reflash the ecu do you mean the std ecu as fitted?
I didn’t know this could be done. My limited knowledge of these things suggested that a flash remap can only be done to a power commander.
I’m missing something obviously. I have read through a good number of threads about this on here. But never had any practical experience of it.
But if you CAN modify a std ecu to fix this problem, how can I get this done?
If not Would I need a PC5?
How about these 02 eliminators built by Rottweiler, there’s nothing on there site about them turning on the engine light..?
Cheers james

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Re: O2 eliminator..? Ebay. Build your own.

Post by kevxtx » Wed Feb 14, 2018 8:07 pm

Yes factory ECU's can be reflashed you would have to find someone that would do it for you I don't do the 1290's but they can be done, if you search this forum you will find guys that have bought software & are able to load the developers custom maps into their 1290 factory ECU's.

I cant comment on the dongles as I no longer ride a KTM & cant do any development or testing to confirm.

I do many reflashes a year mostly Yamaha's which is my current bike where I remove all the factory restrictions, rewrite all the throttles progressions in all modes, remove top speed limiters, turn of the closed loop O2 sensor, turn off the SAS valve, turn off injector cut on fully closed throttles, reduce the fan run time from 106C to 96C, build Dyno custom maps for a few different pipes getting the AFR right on each cylinder for the different pipes.

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