Yes, I think my English was not completely clear! And to access the feedback parameter, the lambda must be connected. But we are not completely sure how the feedback parameter works.
This is a document found on the web that explains how the update of the IBEAT software in the year 2009 has allowed the regulation of the CO
http://www.husqvarna-motorrad.de/uploads/tx_userzupindownloads/RS_05_09_Diagnose_Software_Update.pdf
Translation page 1
Circular technology Husqvarna RS 05/09
Info type update
Subject diagnosis software Husqvarna
Model Husqvarna with Mikuni injection system
Year of construction 2009-
Dear Husqvarna Dealer,
Hereby we would like to inform you about the latest diagnostic software for Husqvarna
Inform injection models (Mikuni injection).
Husqvarna will be offering new diagnostic software starting this year
Dealer training was addressed.
All diagnostic tools that have already been shipped with the new article number 8a00a9634
(from April 2009), are already equipped with the new update.
The diagnostic tools with the article number 8000a9634 (shipped until March
2009) can be updated with the update CD 8a00h1387.
The "old" diagnostic tool must first be uninstalled from the PC (not just delete it)
then reinstall with the update CD.
For all Husqvarna dealers, the price for the update CD is
(Art.-No .: 8a00h1387) € 125.- plus VAT.
Advantages and possibilities:
CO Adjastment:
Translation page 2
Circular technology Husqvarna RS 05/09
The new diagnostic or update tool asks the possibility of the exhaust behavior in the
modified racing version (without lambda probe) to change or adjust (CO).
These settings can only be made in the model years from 2009
become. The 2008 injection models can only via the feedback Adjustment (with
Lambda sensor) (see RS 13/07).
The CO Adjustment also offers the possibility of mixing over three
Adjusting speed regions.
Zone 1 corresponds to a speed range of approx. 20%.
Zone 2 a speed range of about 40%.
Zone 3 about 70% -.
By modifications to the vehicle such as Exhaust systems, etc. can do that
Fuel ratio can be adjusted accordingly fast.
O2 FB Adjustment:
The O2 FB Adjustment is a kind of "automatic-setting parameter". Here, the
recorded parameters (corresponding to the 100% measurement) in the control unit via the
Reset button. This adjustment is only possible for vehicles with
Lambda probe operated. If the lambda probe is removed, this is O2
Adaptation no longer active.