I noticed a few pictures of 630's in higher elevations and wonder how the EFI works when the bike is hauled from a lower (1,200ft) to 12,000ft with the PU kit and no O2 sensor? I hauled a 2013 XT250 up there and it would not compensate well and got rich, almost un-rideable. Brought a 2014 EXC 500 and it ran perfectly fine, so what's the deal? You guys that have the PU installed(most if not all of us!) and have hauled your 630's to altitude, did you have to let them idle to "learn" where they were or do they adjust quickly and effectively on their own? Thanks
