Quote:
Originally Posted by
shards
I bought a Stage 3 filter and PC3 for my 2007 XTR. The O2 sensor had been removed and an eliminator fitted. The dyno shop could not get the PC3 to build a usable map because they said the dyno could not "handle" the fact there was no O2 sensor.
|
I'm not entirely sure thats true.
I was under the impression that the O2 sensor is there in cases of closed loop operation, in that when the bike is cruising along, and at low RPM, the ECU takes readings from the O2 sensor and leans/richens the fuel ratio regardless making it impossible to build a fuel map.
This is why an O2 eliminator is installed (and the O2 sensor removed) which sends a constant signal to the ECU to keep the bike in open circuit the whole time which can be mapped, to enable the PC3/V to create the fuel map.
So them saying that they can't create a map because theres NO O2 sensor seems contradictory.