From the Fuelmoto website:

Closed loop mode occurs only under certain conditions which are light load, steady speed part throttle, constant mode below approx 40% throttle. It is only after these conditions that the will EFI go into closed loop mode and the ECM will adjust until the O2 crossover point is in the 14.7:1 A/F range.

That sets a point that the bike will go into closed loop "when the other conditions are met". If they ain't "met", it ain't goin' into closed loop regardless of what you type into that cell.



.

 

I agree with Jamies statement, but where the original map settings are in closed loop is where those conditions are met. If you don't meet those conditions you will not be riding in the closed loop portion of your map. When vtuning and you set all the cells to 14.6 you are in closed loop to collect data. 14.6 is the switch that puts the bike into closed loop.

 

As mentioned, you don’t run closed loop in those regions where you need A/F outside the narrowband O2 sensor range (richer than about 14.0 I think). But you wouldn’t want to anyway. There is much discussion on the various tuning forums, but it boils down to life is a compromise.. Just to perhaps clarify...

The TTS tuning kit characterizes the engine VE and then the software develops a MAP that is very close, in practice, to one you’d get at a dyno shop.... better than many. TTS does this running completely closed loop and then suggesting MAP values for those load/TPS/rpm parameters measured. The tuner looks at the values and adjusts the regions not measured (typically not observed in normal ridding anyway) and perhaps does some smoothing. Then the open/closed loop regions are reset as desired. 09s and 10s typically run 80% closed loop from the factory, rather than the 40% of earlier models... but its your choice. You can then go on and adjust timing if you want, which is not as automated.

The Dephi ECU is actually pretty good, currently better that anything else that’s practical for the street. When running in open loop regions, the ECU is just making its best guess without O2 feedback, although it does make some adjustment based on the current closed loop parameters. The better the VE tables, the better the guess. If you research, you will find that, because of real world sensor and replacement ECU limitations, this method actually provides a street bike running closer to optimum than wide band systems.

Now if you want to run closed loop richer than the Stock O2 sensor can measure effectively, you do need to replace the ECU and sensors with a wide band system... but then they aren’t that accurate for street application... so more safety margin... goes back to that life is a compromise, there is no technology that supports a perfect tune directly.... there is no technology that indicates the A/F directly.

 

This is not a correct statement