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Old 06-08-2006, 01:32 PM
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curtis73 curtis73 is offline
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Re: High altitude effects

If its a carbed car, it will most likely have a much lower idle, run a bit richer, make much less power, and even stall. My 454 didn't like Flagstaff one bit without some tuning. I was only there three days so I put up with it.

If its EFI, the only thing you should notice is a loss of power. The computer will sense less air, less oxygen, less ambient air pressure, and inject less fuel to keep a proper mixture. Idle should stay the same, but less air and fuel means less power.
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