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I have a wideband sensor (the AEM UEGO type). So, where is the suggested location of the bung? I’m not considering doing this in lieu of a dyno test but in addition to. But I’d like to get thoughts on optimal location to mount the bung so I’m not getting false readings.

Your input is greatly appreciated on this.

double diamond wrote:Location of an oxygen sensor in the exhaust system depends upon whether you use a wide band vs. narrow band sensor. Will you use a complete kit or piece it together yourself? Might be more expedient to put you Ducati on a dyno and use the skills of an experienced facility.

Matt

Imho, the position for the sensor depends on whether it has an internal heater or not. As the sensor should run very hot, a heaterless one should be placed between the 1st and the 2nd bend. With heater, the location is not critcal along the header pipe.

cheers Hans

Jordan, it is a complete kit, nothing else required.
I would think it would be a lot less $ from US.
HMBA, the kit I used suggested length placed the sensor next to the selector box
I do recall reading that it has a heater in the sensor ( will confirm if you are interested)
Graeme

EGO sensors I've seen on cars are quite near the engine.
Bosch suggestion is for their sensors to be installed so as allow condensate to drain - 10 degrees from horizontal, but don't mention where along the exhaust pipe in their application note.

Jordan
New South Wales

Summit Racing has it for $159.79

https://www.summitracing.com/search/bra ... w=SKU&ar=1

John

That’s the one I have. So, suggestions on where to locate the o2 bung?

Gianni wrote:Summit Racing has it for $159.79

https://www.summitracing.com/search/bra ... w=SKU&ar=1

John

Summit has them too:

https://www.summitracing.com/search?Sor ... sor%20bung

Appears to be just a simple M18 x1.5 thread pitch female bushing.

Anyone know what the difference is between a "universal" A/F kit, and one made for specific vehicles?

Been thinking about your problem and I think Eldert identified what is happening - the float bowl is running out of fuel resulting in a lean condition at
WOT in 4th/5th gears.
You could check by installing a transparent fuel line, put the bike on some type of stand so the rear tire is off the ground, run through the gears and observe the fuel level in the line.
As you have checked tank venting and petcock size, then something most be upsetting the action of the float and inhibiting the fuel flow. This might be related to some vibration issue. Can you insulate the carb from the head to try and lower/change frequency of the vibrations reaching the carb?
These kind of situations can be real tests of character!
Good luck and please let us all know what finally worked.
John

As explained to me by a friend who has experience with A/F gauges: narrowband sensors should be located close to the exhaust port. Wideband sensors can’t take the heat that narrowband sensors can so must be located some distance from the exhaust port. This location exposes the sensor to potential false readings due to reversion. I would think the kit you purchased would have instructions on where to locate the sensor. If you want to dive deeper into the subject, have a look at rbracing-rsr.com and view the product information for their air/fuel gauges.

Matt