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[Doc 1]

Yes the new DBW touring bikes for 2010 will be replacing the AFR tables with Lambda based fuel tables. The new calibrations will be a 218 level.
The VE tables will be calibrated in MAP (kPa) not throttle positions any more...this I find very interesting.
You TTS owners....update your software and you can read all about the tuning changes with the Lambda based tables in the Tuning Guide...I'm sure you will find this very interesting.
The auto industry has been using this Lambda system for years and it will be more accurate fueling for the Harley also, but, it is a bit awkward getting your head wrapped around a whole different way of looking at fuel values....no more AFR. Example; Stoitch with AFR values is 14.68, this is something we are used to looking at however stoitch in Lambda is 1.000. Any value higher than 1.000 is leaner than stoitch and any value lower than 1.000 is richer.
With this new system we will be able to get a more controlled Closed Loop area (the bias voltage tables will be gone) To V-Tune your bike the fuel table will be set at .981 not 14.6 any more. The value of .981 equals 14.4 afr.
While in closed loop you can set less loaded cells with a leaner value and the loaded cells with a richer value....its really cool. The Lambda values will range from 1.020 = 14.97 to .967 = 14.20 in closed loop (I think) and to much richer values in open loop.
So you ask why the change...and that is a good question. With todays fuels (E10 and E85) stoitch changes....ie... the stoitch for gas as we know it is 14.68 however when using corn gas it takes more volume of fuel to produce the same amount of energy that gas does so E85 stoitch rating is 14.28. Here is where Lambda based values come in.....no matter what the fuel is stoitch is 1.000 = 14.68 for gas and 1.000 = 14.28 for corn gas. I believe we will be able to select a blend of fuel....Blend A or Blend B and not have to retune for these different volumes.
There is a lot to this Lambda stuff and knowing it was coming I did some research on it through the net last year so I'm ready....how about you guys? .....get to reading....lol
Doc

[jfh]

Doc,

I downloaded the latest updates and the tuning manual states that the Lambda based tuning was incorporated in the 2009 model year. My current 205 TTS map utilizes the TPS VE tables. I just updated the TTS software and there is no change to the tables for the 2009 DBW maps.  The new Lambda maps must be exclusive to the 2010 models or I will have to wait for the release of 218 level calibrations for my '09.   

John

[Doc 1]

Doc,

Will the new tuning calibrations be limited to the 2010 bikes or will the calibrations be backwards compatible to the 205 level DBW system?

John

John
The ECM has to except the 218 level calibrations and the only one other than the 2010 that has that written into it is the 09 DBW. However if you have a 08 model year and the ECM needs replaced it's my understanding that the 08 will recieve the 09 ECM which will except the Lambda based calibrations.
Doc

[jfh]

Doc,

I have a 2009 and suspect that I should see the changes when I link with the updated TTS release.

Thanks

UPDATE: No changes to the tables for my '09 DBW bike. I thought there might be an auto conversion from 205 to 218 level calibration when I linked with the new software.  Perhaps they will become available when the 218 level maps are released.

[GtreetSlide]

Yep, and i have a killer map in my DBW 09... Sure can't wait to figure out if this is easily convertable to a 218 lambda based map..
 
jimbob

[charles05663]

And what is a DBW?

[GtreetSlide]

DBW (Drive by Wire) was used in 08-09 baggers. No throttle cable. The twist at the grip is read and sent thru wires to the ECU as an electrical signal (as I understand it). tables in the ECU control how much throttle actually opens when signal is received.

PS, I'm not an expert...

jb

[grc]

And what is a DBW?

The proper designation is ETC, for Electronic Throttle Control.  There have been many names given to this technology over the years (it isn't even remotely close to a new thing, been around for at least 20 years), such as fly by wire, drive by wire, etc.  Those other designations aren't just limited to throttle control like the H-D system is; for instance drive by wire can include things like steering as well as throttle control, and fly by wire includes control surfaces as well as engine parameters.

In Harley's version, the throttle cables are eliminated.  There is a sensor mounted in the end of the handlebar that is engaged by the internal teeth on the right handgrip.  Turning the grip turns the sensor which alters the voltage signal to the ECM.  The ECM uses that signal to determine how much throttle should be applied, and sends a separate signal to the throttle body actuator.  That's the little electric motor that actually moves the throttle plate.

One of the advantages to this system is that H-D could eliminate the separate cruise control module and cable from the earlier versions.  The cruise control now uses the ECM and throttle body actuator rather than a separate module/actuator/cable.  Saves on parts, saves on space, saves them $$.

Jerry

[charles05663]

Thanks GtreetGlide and GRC for the explanation...

[jfh]

Looks like the new Lambda tuning capabilities will have to wait for the release of the 218 level calibrations. I had hoped the new software would automatically convert the 205 level calibrations to 218 level.

[Doc 1]

Looks like the new Lambda tuning capabilities will have to wait for the release of the 218 level calibrations. I had hoped the new software would automatically convert the 205 level calibrations to 218 level.

Yes you will have to wait for the new cals to come out...should be shortly. I was told that the new calibrations are a 9 not 218....we will have to wait on that to see also.....lol