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I heard mention by a couple people that a vehicle that runs a SC looses less power at high altitude, lets say you have a super charged mustang that is putting out 500 HP at the crank, then you have say a N/A Z06 corvette that is also running 500 hp at the crank. how much power loss do you think both cars would have at say 5000 ft,
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its all about barometric pressure. the maximum amount of pressure in the intake manifold of a naturally aspirated car is the outside pressure. The higher altitude you go, the less air pressure, and the less oxygen you get in the intake. turbocharged cars will still make around the same amount of boost no matter what the altitude is so the intake manifold pressure will not drop as much if you are at a higher altitude.
I heard mention by a couple people that a vehicle that runs a SC looses less power at high altitude, lets say you have a super charged mustang that is putting out 500 HP at the crank, then you have say a N/A Z06 corvette that is also running 500 hp at the crank. how much power loss do you think both cars would have at say 5000 ft,
The loss will be the same since a supercharger has a fixed boost level based on the pulley size. Of course you could put on a smaller pulley to compensate; the N/A car is out of luck.
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Pete
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According to the NHRA correction factor. If a N/A car loses 1 second, and F/I car only loses .5. So, up at altitude, us N/A cars really have a disadvantage againt the FI guys ie: STI's and Evos.
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N/A vs SC'd power loss at altitude??
