Continuing Saga: O4 XB12R AFV Dropping

[tukkayak]

Hello again everyone,

Here is an update to my new-to-me project bike with 68K miles. It is running strong yet leaning out over longer hauls and seems to be doing this at a quicker pace by the day. I have put roughly 200 miles on it since the cluster/light repair took place. I ride in central Texas hill country.

Mods:
K&N Air Filter
Jardine Exhaust
Tune from Buelltooth

Successes:
Repaired Cluster
Repaired Lighting
Continued Painting

Maintenance:
New Engine Oil
New Primary Oil
All Grounds cleaned, tightened and tested
All Connections cleaned, inspected, and greased with dialectric
Sprayed carb cleaner to check for change in RPM- no result.

New Issues (which probably existed long before I got it):
The bike will run as expected for 50-60 miles. I noticed a gradual increase in noise volume coming from the top of the air filter as, what I assume, is the ECM leaning out the AFV.

Each time it has leaned out, I reloaded the map, and do a TPS reset. I have noticed an AFV reading of 92 on several shorter rides. The Lowest I have seen it was 68 after my 1st 100 mile ride. After that ride, I shut it off for dinner, went out for another short ride later that evening, and it ran boggy, was gutless as it popped and cracked.

No codes are being thrown.

After reading a bit, I thought possibly 02 sensor. Replaced it today with a Bosch #12014 (which people have said they have had good luck with). I rode for about 30 miles today with the new 02 sensor in and the AFV had dropped again to 78.

I am continuing to read up on things. I read a post yesterday where a failing coil was causing a rich environment where the ECM responded by leaning the bike out.

Any help would be greatly appreciated.

Regards,

 

[Cooter]

What 'tune' did you get from Buelltooth? They normally give out ones that are rich and meant to run in Open Loop only and require you to "lock out" your AFV. If your AFV is changing, you didn't do that part right.

 

[gunter]

where a failing coil was causing a rich environment where the ECM responded by leaning the bike out.

This is of course incorrect, as a failing coil causes a lean reading at the O2 sensor.

 

[34nineteen]

Gunter, why is that? A failing coil, will likely not be burning fuel completely... wouldn’t the O2 sensor see that as rich?

 

[tukkayak]

What 'tune' did you get from Buelltooth? They normally give out ones that are rich and meant to run in Open Loop only and require you to "lock out" your AFV. If your AFV is changing, you didn't do that part right.

I bet that is what is going on. Can someone walk me through the steps to lock out the AFV with the Buelltooth App? I will read up on it, they have good tutorials, but I like to have as much info going into this as possible. Thanks for your reply.

 

[tukkayak]

What 'tune' did you get from Buelltooth?

Sorry Cooter I did not answer your question. The tune they sent me was: BUEGB_RT1_XB12.xpr.

I have the original tune backed up and have not gone back to that as I felt the one uploaded did a good job.

Thoughts? Is there a better tune out there?

I am new to this obviously, so I don't know enough to begin messing with the mapping. I did data log one trip. I have yet to look at it though.

 

[tukkayak]

34nineteen, that is what I thought would make sense, but I am too new to this to be entrenched in my thinking. I am eager to hear Cooter's explanation as well.

 

[tukkayak]

I spent the day throwing paint around. Some success and some failure but ALL of it was fun! Here is the result! If anyone likes, I can share the steps taken to make it happen. I will be redoing the pass seat cover. STUPID me rushes the paint and did not let it set up long enough. Oh Well, a project for another day!











My plan/objective was to have a subtle paint scheme. One that would make someone have to look twice to see the result.

 

[tukkayak]

I spent the day throwing paint around. Some success and some failure but ALL of it was fun! Here is the result! If anyone likes, I can share the steps taken to make it happen. I will be redoing the pass seat cover. STUPID me rushed the paint and did not let it set up long enough. Oh Well, a project for another day!

View attachment 12106

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View attachment 12109

 

[Cooter]

I am positive the steps you need to do for whatever tune you got are on their website because FIRST you need to know if that tune is meant to be run in Open Loop only. Once you find that out, do the steps below. PLEASE, don't do this unless you KNOW what tune it is. Ask them.

From memory, IIRC, YMMV, their website has better info about their tunes, etc...
In ECMDroid, Go to ECM parameters.
First in general config, uncheck "closed loop operation"
then in O2 setup, set both the AFV minimum and Maximum values to 100.
Then burn that tune in, do a TPS re-set according to the manual (also found on the Buelltooth.com or Buellmods.com website).
and see if that works.

 

[tukkayak]

Cooter,

Thank you for the heads up. I absolutely did not turn off the 02 sensor. I walked through the steps. Easy enough. I am looking forward to putting the bike back together tomorrow and seeing if this makes a difference in the AFV issue. It should.

 

[tukkayak]

I checked my email communication from Buelltooth. This was the response I got from them.

Buelltooth Tech stated, "Install this file and set it up for open loop at 100 if you’re at or near sea level. If it doesn’t run well then you probably have a mechanical issue.

I went ahead and went to their website and followed the directions. The only difference was that they said a TPS reset was not necessary for this change. Easy enough to do. Is this what you would recommend?

Also: Open Loop Learn IS selected and I do not see a closed loop operation listed as an option. I do see an IDOL CLOSED LOOP. Is this what you are referring to?

 

[Cooter]

Did you install their Baro kit?
Its not under the general tab like I thought, uncheck "Enable Closed Loop". Its under O2 set-up like setting the AFV min and max to 100.

 

[Cooter]

I went ahead and went to their website and followed the directions.

You might want to double check your work.

 

[tukkayak]

Cooter, After running the bike with a the open loop done correctly, it ran fantastic. I masked the 02 sensor, but it is still throwing rich codes. Thoughts on this one?

 

[d_adams]

Put one of these on it and see how it's really running. I'm betting you'll be shocked at how far off it really is. https://www.innovatemotorsports.com/products/dlg1.php

 

[lowkey]

I am positive the steps you need to do for whatever tune you got are on their website because FIRST you need to know if that tune is meant to be run in Open Loop only. Once you find that out, do the steps below. PLEASE, don't do this unless you KNOW what tune it is. Ask them.

From memory, IIRC, YMMV, their website has better info about their tunes, etc...
In ECMDroid, Go to ECM parameters.
First in general config, uncheck "closed loop operation"
then in O2 setup, set both the AFV minimum and Maximum values to 100.
Then burn that tune in, do a TPS re-set according to the manual (also found on the Buelltooth.com or Buellmods.com website).
and see if that works.

To turn OFF the 02 sensor using ECMDroid the steps are as follows: ECM Parameters / 02 setup / Minimum RPM (600 by default) > change this above spark cut threshold... like 12000 / Now the 02 sensor is inactive for adjustment by the ECM.

 

[Cooter]

Hey Lowkey, unchecking "closed loop operation" isn't enough to stop the ECM from going into closed loop, reading the O2 and making changes?

Would you mind detailing that for me? It may explain some current tuning anomalies I'm playing with.

 

[rb70383]

Gunter, why is that? A failing coil, will likely not be burning fuel completely... wouldn’t the O2 sensor see that as rich?

If the O2 sensor read fuel...O2 doesn't see fuel. It only sees O2. When a cylinder fails to fire the oxygen is not consumed in combustion, so all the raw unused air is being pumped into the exhaust, flooding the O2 sensor, with air...