Interesting how he left the 02 sensors in place. The guy who dyno developed my flash (Chris Steedman, CJS Performance) had me remove them, said that they provide feedback to the ECU to keep the fueling in the EPA range.
So your o2 is used for closed loop. That is when the bike is idling hot, or in neutral, or a few other times of low load. They are almost always narrow band o2 sensors and therefore of limited use.Interesting how he left the 02 sensors in place. The guy who dyno developed my flash (Chris Steedman, CJS Performance) had me remove them, said that they provide feedback to the ECU to keep the fueling in the EPA range.
I just followed the tuner's advice. It runs great everywhere and at every altitude.So your o2 is used for closed loop. That is when the bike is idling hot, or in neutral, or a few other times of low load. They are almost always narrow band o2 sensors and therefore of limited use.
The bike will go to open loop under just about all other times iiuc.
You absolutely can remove the o2 and use open loop mapping for everything. Its a viable option.
Personally: I prefer to keep closed loop operations, as its really handy to keep the bike idling smoothly over altitude changes (i.e. i want the bike to idle right at 12,000 ft even if I tuned it at sea level). Air gets thin at altitude, and your bike wont know it if you use open loop for all operation.
Both are good, totally just a matter of what you prefer.
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I hear that that is a great tune. We used Flashtune, and i love the results.I just followed the tuner's advice. It runs great everywhere and at every altitude.
Come to think of it, ECUnleashed did the flash on my last S10 and didn't mention removing the 02 sensors. Gotta say though, my current flash is much better but that could be the result of that flash being developed on a dyno.
Chris now leaves the sensor in place but switches them off in the ecuInteresting how he left the 02 sensors in place. The guy who dyno developed my flash (Chris Steedman, CJS Performance) had me remove them, said that they provide feedback to the ECU to keep the fueling in the EPA range.
cjracing did mine as well on the dyno for 4 hrs i rode it to him, my o2 sensors are still in the pipes but not plugged in at the leadsInteresting how he left the 02 sensors in place. The guy who dyno developed my flash (Chris Steedman, CJS Performance) had me remove them, said that they provide feedback to the ECU to keep the fueling in the EPA range.
i don,t know what my 2013 gen 1 is euro wise but i know he had it for over 4 hrs on the dyno and the o2 sensors are plugged in down at the headers but not plugged in at the leads he tucked them out of the wayI think if you unplug them on the Euro 4 motors the ECU brings up a fault. So he now leaves the connected but switched off
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