Quote:
Originally Posted by
DirkZ
As I understand it, Kev's O2 Controller increases the A/F ratio to about 13.6:1 from the standard 14.7:1 in the closed loop section of injection system.
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Yes it does (although in practice it actually "decreases" the A/F ratio from 14.7 to 13.6:1).
Quote:
Originally Posted by
DirkZ
The CO setting only affects the closed loop and by adjusting it up on the XTZ (with F1 tool) also increases the A/F ratio depending on the amount of upwards adjustment. Am I correct with this assumption ?
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Yes, but it only does so at idle and up to a 2% throttle opening. The CO setting exists simply to adjust/clean up emissions at idle and just off a closed throttle.
Quote:
Originally Posted by
DirkZ
So by fitting the O2 controller, how does this affect the CO setting, or does it disconnect the bike's closed loop (CO) setting and just fix it at the 13.6 ratio ?
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Fitting an O2 controller does not affect CO setting, this can still be changed manually in the DIAG mode. The O2 controller does not disconnect/eliminate the closed loop circuit. It still remains and the O2 sensor still does its stuff and feeds information to the ECU. However, what it does is intercept the signal and modify it, effectively changing the ECU's target value for A/F ratio from 14.7 to 13.6:1 in the closed loop.
Quote:
Originally Posted by
DirkZ
Kev's O2 controller is cheaper than the F1 tool (for the XTZ) and will essentially do the same if one just wanted to get the closed loop setting richer.
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No, they serve completely different purposes. The O2 controller is the only way to modify closed loop fuelling. Buying the Fi tool and adjusting the CO is not going to have the same effect at all.
Just get yourself an O2 controller. You will be pleasantly surprised by the difference it makes!
