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Closed loop is, by definition, less static, because it takes the open loop map and adjusts it for real time O2 sensor feedback. And does so to lean it out for emissions.In contrast the open loop map is richer (for safety and power). It is preferred for performance because of that.But all are effected by ambients.
I'm wondering if it's the O2 sensor that gives the cold start issues?? Or the cause of the surging??
I'm wondering if it's the O2 sensor that gives the cold start issues??
What about altitude changes? Is that when the 02 sensor shows it's positive capabilities by adjusting the fuel/air mixture as needed for best efficiency?
I see a lot good answers, happy to see people understand how it works. With most 5am guzzi maps, the maps are at the top half of the rev range to rich. That means the lambda is fighting the richness. And lambda is not always in closed loop. It's only doing that when you drive pretty constant. When accelerating you are not in closed loop. Other side effect. The ecu has a long term accumulating setting if the lambda is to rich or lean. So if the lamdba has to do much leaning, that factor will be negative, and works as a modifier over the whole map. So also in the not to rich area's, the map is leaned out then. You can reset that value with reset autolearning parameters. It has two values, one for the idle range, one for the rest.
open loop fuel injection is like a blind person tossing a bucket of water towards someone shouting fire...
Open loop is still waaay smarter than carbuerated...also it seems the lambda can "autotune" over fueling problems & cause the whole map to shift out of what's optimal.
On a Guzzi is the map a combo of open and closed? Yamaha does this. For throttle position is it roughly 0 - 40%, and rpms from about 0 - 6, 000. IIRC.Sent from my SAMSUNG-SGH-I747 using Tapatalk
something like that, I don't know where it ends, and it only is closed at pretty steady rpms. Remember only for emision testing, not to make the thing run better or use less fuel.
Do you mean that I can just change my narrow band sensor to the wide band sensor without changing the original map? What is the part number for the wide band sensor?
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