I eat my R6
Join Date: Dec 2014
Location: Southwest Ohio
Bike: 2008 Yamaha YZF-R6s Stock
Re: 2017 o2 sensor help
Cars typically use the upstream sensor to make adjustments to injector pulse width (fuel trim). If the bike uses it the same way, you may see mileage decrease. Worse result would be that it'd run too lean, but I doubt that would happen because in complete absence of it, the ECU defaults to a safe strategy to prevent that. In other words, don't plug it in and wire it out of sight, just to get rid of the light. The bad thing is, having that light constantly, will mask any real issue, should it arise.
I don't have any experience with the PC-V devices but flashing the ECU should be able to turn off any light.