I’m running a Gilomen ECU tune and I still get the O2 sensor code when I’m in the higher elevations. It doesn’t seem to affect anything. Still have full power. It usually seems to pop up if I idle very much, and usually goes away after a bit of riding.It also got the O2 sensor issue. Not sure how to fix that. Maybe a tune? I think somebody's already tried a different O2 sensor with a different range.
Is somebody said I think the two problems might be related. So I don't think I should modify that valve until I figure out what the problem is