So I took it out again today (the temp was in the 60's).
I really think something is amiss. The engine really lugs down at even modest RPMs. I can't drive it through town at 25MPH without having it in 1st at about 2500 RPM.
Then, when I got it warmed up (after a humorous story that I'll put down in a few words), and was turning off a side road onto the highway, I got it up to about 4000 RPM and it just lugged. Started missing, and ran really rough. It felt like my Mustang when I hit the rev limiter - going into shutdown mode - but that shouldn't be happening.
I've put about 150 miles on it over the past few days, so I would think the "computer" would have adjusted the fuel injection for the altitude. Plus, if it came from Mexico City at 8000', this 6000' ought to be like sea level.
Where should I start? This car came with absolutely no paperwork.
Thanks!
Tony