Steve,
How much experience do you have tuning EFI, particularly on newer street bikes?
A narrow band lambda (exhaust O2) sensor(which I'm almost certain is used) operates in two states (approx .1V to 1V) and crosses this range quickly as the exhaust AFR crosses between 14.6 and 14.8 to 1 as the ECU adjusts injector pulse width. The reason for this is because a CAT converter operates in this AFR range. This is only applicable to idle and low load conditions, as the AFR needs to be much richer under load. The systems operate in a dual mode, closed loop at low load and open loop under load, but use an adaptive mappping algorithm that generates an auto trim factor thats applied to bias the open loop map. From a performance perspective there is no reason for this, it purely regulatory. A 14.7:1 ratio is too lean, 12.5 - 13:1 being more ideal. Now, if you use an expensive wideband sensor, with a more proportional analog output, you can control a much wider range of the fuel map in closed loop, at whatever AFR you want(map developed on the dyno). I doubt this is what it has though. With a fixed map in open loop mode, the base map is derived on a dyno(with AFR) and you control map bias with various temp and air pressure sensors(and sometimes mass airflow). Of course you will have minor tolerance variations but its minimal. The system will not account for major changes in configuration, but either will the semi closed loop system, thats a myth.
I've been through this with both a Cannondale and my Ducati, actually building my own maps on the 'Dale and converting the Duc to a manual trim/open loop race map ECU (map tuned for open exhaust).
Basically, when the base map is done right, things work great.
The 70 deg shut off is a bank angle sensor, all modern road bikes have them. Its a safety device to shut the system down in a suspected crash, not to stop flooding. Once an EFI engine stops, injection stops, no flooding possible. My Cannondale did not have this, it would run on its side till it overheated (or oil starved) just like it was on the stand.
