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Originally Posted by laphan
Nope,
turbo actually works better than NA in high altitude:
A turbocharger also helps at high altitudes, where the air is less dense. Normal engines will experience reduced power at high altitudes because for each stroke of the piston, the engine will get a smaller mass of air. A turbocharged engine may also have reduced power, but the reduction will be less dramatic because the thinner air is easier for the turbocharger to pump.
http://auto.howstuffworks.com/turbo.htm/printable |
Beat me to it, was about to come in and defend you there. Less atmospheric pressure is no problem with forced induction, you just run more boost. No such option with NA engines......
Also dont forget that density altitude is a figure that constantly changes (even in the one spot) meaning that your NA engine will always be adjusting to the amount of air pressure in the atmosphere and therefore never really be tuned perfectly.
Sam