Kev's O2 mod for the 790 - 2018 KTM 790 Duke Forum
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post #1 of 16 (permalink) Old 07-28-2019, 10:50 AM Thread Starter
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Kev's O2 mod for the 790

I've been researching ways to improve the low/steady speed surging and came across a O2 mod that has been popular on several other bikes including the 690s. Seems like the solution to our snatchy throttle issues. He just needs a 790 to develop the mod for our bikes.

If anyone in the Brisbane Australia area wants to lend him their bike, it sounds like he'd be willing to help us out. I'd jump all over this but I'm located in the US.

You can read more about the mod here https://www.ktmforums.com/forums/duk...s-o2-mods.html

I commented that I'd be interested in the mod for the 790 and he said he would only need a 790 for the day.
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post #2 of 16 (permalink) Old 07-28-2019, 03:52 PM
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Interesting for sure. Do many people still have the surging issues, with the latest software update?

Man that forum has a load of advertisements, gives my laptop a headache, :-)

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post #3 of 16 (permalink) Old 07-28-2019, 10:09 PM Thread Starter
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Interesting for sure. Do many people still have the surging issues, with the latest software update?

Man that forum has a load of advertisements, gives my laptop a headache, :-)
My dash says I'm on version 1.00. The KTM diagnostic tool says I'm fully up to date and I'm still having the low speed jerkiness while trying to hold a steady throttle. Going through a town at 30 mph is annoying, even in rain mode.
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post #4 of 16 (permalink) Old 07-30-2019, 03:28 AM
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Originally Posted by dj790duke View Post
My dash says I'm on version 1.00. The KTM diagnostic tool says I'm fully up to date and I'm still having the low speed jerkiness while trying to hold a steady throttle. Going through a town at 30 mph is annoying, even in rain mode.

We spoke with KTM officials at the road show few weeks ago in south france, and they told us the same, with all software versions the low speed shaking is simply there.
Our dealer is selling the coober ecu, they fix it. Also they are able to order Akrapovic EVO Kit, not street legal but also able to fix it.

Otherwise, you can see it as a feature, to a have a boogy woogy bike :-)
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post #5 of 16 (permalink) Old 10-14-2019, 04:51 AM
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Originally Posted by dj790duke View Post
I've been researching ways to improve the low/steady speed surging and came across a O2 mod that has been popular on several other bikes including the 690s. Seems like the solution to our snatchy throttle issues. He just needs a 790 to develop the mod for our bikes.

If anyone in the Brisbane Australia area wants to lend him their bike, it sounds like he'd be willing to help us out. I'd jump all over this but I'm located in the US.

You can read more about the mod here https://www.ktmforums.com/forums/duk...s-o2-mods.html

I commented that I'd be interested in the mod for the 790 and he said he would only need a 790 for the day.
Finally got my hands on a 790 this past weekend, I got the info I need from the bike, I will see what I can come up with my 02 sensor controllers & the 790's.
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post #6 of 16 (permalink) Old 10-17-2019, 10:17 AM

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I'm definitely interested as well. I still have the jerkiness at low speeds.

Keep the rubber side down!

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post #7 of 16 (permalink) Old 10-17-2019, 10:50 AM
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Am I the only one who feels the bike doesn’t have this issue? It is very smooth to me.

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post #8 of 16 (permalink) Old 10-17-2019, 10:56 AM
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Am I the only one who feels the bike doesn’t have this issue? It is very smooth to me.
Can't say mine is that bad. Thing it - it's not a four or a triple - it's a twin with a weird offset firing cycle to emulate a V-Twin. In Rain, street and to some extent sport modes this is hard to spot. In track mode the lumpiness does wave hello. There is however a monster dip in torque.

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post #9 of 16 (permalink) Old 10-17-2019, 01:38 PM

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It's not bad enough to really consider spending a lot of money to change, but a fix and a cost would be nice to know and be able to decide on.
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post #10 of 16 (permalink) Old 10-17-2019, 02:36 PM
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Quote:
Originally Posted by GLantern View Post
Am I the only one who feels the bike doesn’t have this issue? It is very smooth to me.
Can't say mine is that bad. Thing it - it's not a four or a triple - it's a twin with a weird offset firing cycle to emulate a V-Twin. In Rain, street and to some extent sport modes this is hard to spot. In track mode the lumpiness does wave hello. There is however a monster dip in torque.
I hope in track mode you are doing more then 30mph!

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It's not bad enough to really consider spending a lot of money to change, but a fix and a cost would be nice to know and be able to decide on.
That’s a good point.
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