Anxiously awaiting the results from your future call with Fernando…I'll look around for any weird issues, and the idle/off idle at sea level is a bit iffy, but the power while throttle is mashed is GREAT. I can't imagine it running this good at the sea floor at 10k rpms, but having an intake leak that makes it run so rich it fouls the plugs in 5 minutes at 5000ft elevation? I could see if it's trying to run a 3000ft elevation tune at 5000ft, that would be awful. Maybe the Alba tune is every 500ft or 1000ft?
I did find something weird, and I'll try to get a picture of it when I can get back to the machine this weekend, but the middle MAP sensor tube on the 3 bar sensor connecting to the manifold is slightly backed off the fitting, BUT there is a 90 degree angle fitting, and it wont push on any further. No idea why they designed it that way, it seems really dumb It doesn't show it in the microfiche, but it's on the engine-side of tube 11: 2021 Yamaha YXZ1000R SS SE CAL (YXZ10YCCMW) Throttle Body Assy 1 | Babbitts Yamaha Partshouse
Yea, that's what I thought the point of a MAP sensor is. I know they are inferior to MAF, but they should basically auto correct for less air by pulling fuel? I also noticed there are two identical MAP sensors on the base non-turbo install, so I assume the system retained the 1bar map sensor for finer details on the MAP? Maybe the GYTR sucks at reading that and MAPs, and the Alba tune corrects for that?
I did just get a concerning email response from Alba just now about their tune and elevation:
Would be best to call in and get with Fernando. I do know the YXZ doesn't have an oxygen sensor to change between altitudes; the ECU is not the smartest.