Altitude. High or low compression better?

Disregarding turbocharged or supercharged engines, which will perform better at altitude, a high or low compression engine?
Err......not quite sure, if we're talking modern cars/bikes doesn't the ECM (Engine Control Module - computer) account for variations in atmospheric pressure? Is this the line of questioning your chasing?


Book Reviewer

Dunno about the engines. They are out on the wings.
Khardung La! whats an f1 car doing there?!
I rode a mountain bike up there and bloody hard to breathe. Mind you all the Tata trucks seemed to be getting up there ok. The indian army has a VCP on the top

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