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      06-23-2012, 04:02 PM   #11
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Drives: E93 335is(wifes)E92 M3
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Originally Posted by 767IJP View Post
Density altitude shouldn't be much of a concern. Certainly not to the point of making your car drive " like crap".

Piston airplanes. Certainly suffer from this but we are talking about pressure altitudes in the thousands of feet.

I see you're located in Toronto so density altitude would have zero effect.
A higher temperature causes a higher density altitude which will reduce horsepower due to a lower oxygen content.

A 100f day at sea level is same as being at 2500 ft altitude.You loose about 2% power for every 1000 ft of altitude increase.Add in the other effects of higher heat on the operation(a/c compressor ,higher electric load due to fans)you will notice the difference in performance.Turbo or supercharged engines are worse for this with power loss vs heat.
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