Anyone tweaked FB adaptation values in Ibeat V2?

[bbcmat]

I'm trying to confirm my observation that EFI bikes take trim values from the o2 sensor and apply them to the base map when no 02 sensor is available.


Has anyone played with the "02 FB Long Term Adaptation Valuese" map in Ibeat V2? What have you observed?



Some Background info:


Since the standard EFI system (with o2 sensor installed) uses the base map for large / quick throttle movements - and there are 02 sensor offset values being stored (see Ibeat V2.0 post in this section) - I don't think it is much of a stretch to believe these values still play a roll when the basemap is always being used. (Power up connecter)

Further to this, observations on my bike (09 TE510) indicate improvement in the throttle response and power after running it with the 02 sensor in and then removing it again. I did this at 300kms, 600kms and 1000kms – the last time made no difference that I could see or feel.

Using the 02 sensor also makes it easy to find what fuel brand that bike likes – mine bucks and jumps on Sunoco 94, smooth and strong on Esso 91 / PetroCanada 91, ok on Shell 91. If it likes it with the sensor in, mine loves it with the sensor out.

MAT

 

[Ex HVUK]

Mat,

Are you suggesting the system 'learns' with the O2 sensor in then uses this information with the sensor out? Because to my knowledge the Ibeat EFI doesn't have that capability.

We haven't had need to use the 'Long Term Adaption' option in Ibeat 2.0 but it provides the user with the ability to map the feedback values at 9 separate points dependant upon load and engine speed. This is only applicable to bikes with the O2 sensor installed, without the O2 sensor the ECU has nothing to reference the A/F ratio against.

Dave

 

[bbcmat]

Dave - I am absolutely suggesting that the offsets are applied to the basemap.

The long term adaptation TABLE is created with the 02 sensor, the offset is applied to the basemap when the throttle position changes too quickly for the real-time feedback to be used. If live data was always available - there would be no reason to create a fixed matrix that mimics a 9 position fuel map.

With no 02 sensor in place, I believe the the basemap AND the adaptation values remain - and are used.

I have no other way to explain the permanent change in spark plug color, exhaust plug color, and throttle response I found after installing, using (about 50kms mixed riding plus on/off heat cycles), then removing the sensor.

I could be nuts too - but I've been reading plugs and exhaust ports on my own drag race motor(s) (carb'd automotive 600+hp) since 1991. Something changed - I believe it was in the EFI software.

MAT

 

[Motosportz]

Interesting stuff. I need to learn a lot more about the husky EFI.

 

[seymore]

According to the iBeat 2 documentation;

-The 10 point long-term O2 compensation values are created (auto-learn) by the ECU to compensate for "vehicle variability and deterioration"

-Long-term O2 compensation values can only be read and reset to 100% (no compensation). They cannot be manually adjusted other than being reset.

-Long-term O2 compensation values are automatically logged into bike service history (database within iBeat software) to help identify problems.


It is unclear weather these values at being used while in race mode. If they are, they should have a similar effect as the CO adjustments. Based on Mat observations, I would say it they are still being used.

More testing needs to be done while monitoring exhaust AFR to determine exactly what's going on. It may be best to reset these values before adjusting CO just to have controlled starting point.

*note: this applies to 09 and newer ECU's. I have not confirmed that re-flashing an 08 ECU will add these new features.

 

[Ex HVUK]

Dave - I am absolutely suggesting that the offsets are applied to the basemap.

The long term adaptation TABLE is created with the 02 sensor, the offset is applied to the basemap when the throttle position changes too quickly for the real-time feedback to be used. If live data was always available - there would be no reason to create a fixed matrix that mimics a 9 position fuel map.

With no 02 sensor in place, I believe the the basemap AND the adaptation values remain - and are used.

I have no other way to explain the permanent change in spark plug color, exhaust plug color, and throttle response I found after installing, using (about 50kms mixed riding plus on/off heat cycles), then removing the sensor.

I could be nuts too - but I've been reading plugs and exhaust ports on my own drag race motor(s) (carb'd automotive 600+hp) since 1991. Something changed - I believe it was in the EFI software.

MAT

Hmmm I can see the logic, this need more investigation - I'll do some digging and will report back.


Dave

 

[bbcmat]

After using Ibeat V2 on my 09 TE510 - I can confidently say that mydaptation table does not have an active role in either "powered up" mode or with the 02 sensor.

IMO - It functions to provide a visual log of the correction factor the 02 sensor is using to the base fuel map to bring it to operating mixture.(some have quoted 14.5:1 from dyno testing). The log can be reset and a copy of the log is stored when it is reset.

My experiments show it as an excellent tool when messing with FB1/2/3 - the closer the correction factor is to 100% - the more seamless the transition from 02 sensor control to base fuel map ( eg. cold engine, rapid throttle movements, large changes in throttle position).

On my 09 model the values of FB2 and FB3 make a noticable change in the base fuel map (with 02 sensor in), but only changes in FB2 is reflected in the 02 adaptation log. IMO - It takes a certain amount of time for the 02 sensor to stabilize and the ECU to accept those values, and in my testing I just don't spend enough time (dwell) at +70% throttle to fill in the chart.

Note that the info I read on testing 2008 bikes and Ibeat V1 show FB2 and FB3 as having no effect on the fuel curve. With IbeatV2 they do make a difference in "off the sensor" situations, and in the data log.

Clearing the existing 02 adaptation log and removing the 02 sensor had no effect on the "powered up" fuel map the I previously setup using CO1 / CO2 / CO3. Since then I have put the sensor back in and have not tested if changes to FB1 / FB2 / FB3 have any effect on the "powered up" fuel map.

I don't know what to think about my earlier observations (an active adaptation cycle) - I'll stick with the "I could be nuts" theory. The fact that this was NOT true made it easy to home in on the best FB1/2/3 values.

MAT