interesting reading

[SANGER-RICH]

If this is to hard to read pm me and Ill send a larger page to you.
http://www.***boat.com/image_center/...ratios-med.jpg

[Lookin for Liquid]

If you look at those three items they all affect corrected altitude which is how a blown injected motor is tuned for correct mixture. Bottom line on the humidity is you cant burn water so horsepower decreses when you are in a humid enviornment (race tracks in So. Carolina and Texas come to mind) so you are able to put more air in via the blower pulley change. You can also step on the timing and static compression as detenation is reduced from the water being in the air.
Barometric pressure tells you how much air is in that cubic foot of space that you are trying to put in the motor. The motor is just an air pump and loves more air.
Static temperature has an affect on the amount of air in that cubic foot also. The colder that air is the more you actually have in that cubic foot of space. NHRA loves Reading Penn as that place sometimes is called a mineshaft due to the fact of below sea level conditions(lots of air). Then on the other side there is Denver (less air). Its all about corrected altitude.

[Blown 472]

So lemme get this right, more baro more power?? due to the air that is being forced into the engine due to the low pressure area caused by the piston going down in the cylinder. visa v no such thing as vacuum.

[Fiat48]

I use an aircraft altimeter, temperature and humidty to calculate corrected altitude. It's more accuarate than a barometer.
The corrected altitude for the gauge readings below of 4490 ft., 66 degrees and 45% humidity is 6271 feet. The air density gauge is just a reference.
http://www.***boat.com/image_center/...374air-med.JPG

[Lookin for Liquid]

Cough, Cough, thats some serious altitude there Fiat. I start sniveling at about 3000 corrected. All good, the Les Davenport disk for the computer called "jetsize" spits out some automatic readings of corrected and if you have a baseline installed in the PC will tell you what jet is suggested also.

[Fiat48]

Originally posted by Lookin for Liquid
Cough, Cough, thats some serious altitude there Fiat. I start sniveling at about 3000 corrected. All good, the Les Davenport disk for the computer called "jetsize" spits out some automatic readings of corrected and if you have a baseline installed in the PC will tell you what jet is suggested also.
LOL! This is a "good " air day. Lot's of runs made at 7500 ft corrected. Now you know why we like to run in California.

[Race Bob]

Originally posted by Fiat48
LOL! This is a "good " air day. Lot's of runs made at 7500 ft corrected. Now you know why we like to run in California. Yeah you gotta love runnin in the valley '' mineshaft'' in the morning and with a good barometer day, 2500 ft. @100 degees.ahh it's good to race in cali.