Re: Colorado ATV question
We are at about 1750 here, older machines. We have a good mechanic set the machines to run at 5000', the top of what we have here. That same adjustment has held fairly well in Nevada and Wyoming to about 8000' or 9000'. The closer to 9000 starting, idle, and running all are a bit rough. Not unmanageable but noticeable. Some folks carry kits, and field tune when needed.