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Ok, to play devil's advocate.
Posted by david hanley (more from david hanley) on Mon, 26 Feb 2001 04:28:07
In Reply to: Power at altitude (revised), Coolknight, Wed, 21 Feb 2001 08:39:07
Well...

Firstly, according to the automotive mechanics handbook i own, your numbers are wrong. 1.41% per 333 feet.. The handbook says 3% per 1000, or 1% per 333 feet.

Many engines get perfectly adequate power at altitude. I've had my bmw 328 to over 10,000 feet and i did not *really* feel a need for more power. Remember, roads at high altitude are narrow and windy. You really don't have much need to the big HP bursts.

And, also, turbo lag INCREASES with altitude. A LOT. I've had the saab at those very high altitudes, and although the turbo kicks in and gives better HP then the BMW at 10,000 feet, turbo lag extended to many seconds, even when moving. This is a BIG PROBLEM when passing, and the bmw is easier for passing for this reason, even though it's substantially down in HP.

Don't get me wrong, i love our SAAB, i think it's one of the best makes out there, but i am also realistic, the car has tradeoffs. All of them do. The T7 is not *really* amazingly high-tech, the saab engine just has more reserve power, and a bigger turbo. The tradeoff is turbo lag, and lower stock HP numbers than many competitors.

dave
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