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Old 10-26-2012, 09:04 AM
SteveH SteveH is offline
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Join Date: Aug 2006
Location: Colo Springs
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I can see your point - I wonder if you can get a compression tester that can be zeroed for your elevation?

Still, there are fewer air molecules per unit volume at high elevation, and thus the loss of power/compression in internal combustion engines. How we measure the true air pumping performance of an engine remains the question - since engines are just big air pumps anyway.
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