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Old 12-07-2010, 09:20 AM   #160
a.k.a. Jake
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Joined: Jan 2006
Location: Pasadena, CA
Oddometer: 2,631
Originally Posted by J_White View Post
Yeah, I don't know what it has and doesn't - eager to learn though.
But I'm shocked if it doesn't have any input for atmospheric pressure
If no, from sea level to high mountain elevations the fuel would be
way off???
Can't this be picked up from the lambda sensor? If the air is thinner than expected and the stoichiometry is off as a result, then the lambda sensor should detect that the engine is running too rich and adjust accordingly. Or vice versa for "too thick" air.

That would only work during closed loop operation, though. I'm not sure how this works during non-steady-state conditions. I defer to the tuner gurus on this thread....
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