Quote:
Originally Posted by fud2468
But doesn't the extra water vapor in the air reduce the amount of oxygen available for combustion?--meaning a richer mixture?
Ray Mac
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Check your local meteorlogical blog at your favorite TV station about that, and think about what you're saying. The air can only hold about 4 percent water vapor, and the "relative humidity" is the percentage of that 4 percent. (4 percent water vapor = 100 percent relative humidity) Since the air we breathe only has something like 20 percent oxygen to begin with, changing that by 4 percent doesn't do that much "reducing the amount of oxygen available."
If I remember my tech schooling right, the main difference is that the air charge is denser, which will lead to either more fuel being pulled through the jets on a carb, or the MAF signaling to send more fuel on a computer car, which ends up with the "technically rich" scenario that Christ just mentioned...
...and how your car is set up/designed makes all the difference in whether or not you can use any of that to much advantage,
Sooo... you're gonna either have to play with your car, or find a blog on your particular setup to see what others have found out...
