Re: How Much Does Density Altitude Affect ET
 

Typically 200 in DA equals 1 hundredth to my car but humidity and water grains can play a huge factor. An example would be if say the humidity went up say 15% then it may only take 150 in DA to equal the same .01
Data and lots of it can never be underestimated, I have 5 or 6 log books full of it on this combination so if you come by my trailer and see log books scattered everywhere you know I'm lost on what to dial lol!

Re: How Much Does Density Altitude Affect ET
 

I found simply typing the data from my hand held “weather station” into Crew Chief Pro software predicts my old car pretty much dead nuts, after three passes data at a given track. Mine does not give oxygen data. Appears to me it is not that important. I’m very old, of course, so probably just do not know.

Re: How Much Does Density Altitude Affect ET
 

computech ?

Re: How Much Does Density Altitude Affect ET
 

Racing in these two different conditions: Which one will you be quicker and faster in?

1. 29.00 Baro 900 feet DA
2. 29.80 Baro 900 feet DA

Re: How Much Does Density Altitude Affect ET
 

Is this a TRICK question...?

Re: How Much Does Density Altitude Affect ET
 

No.
;-)

Re: How Much Does Density Altitude Affect ET
 

I didn’t think so ......

Re: How Much Does Density Altitude Affect ET
 

Have not had a chance to look yet but as I remember
Engineered Specialties?

Re: How Much Does Density Altitude Affect ET
 

29.80 will be faster. Barometer trumps everything, except wind.
That’s why sea level tracks are always fast.

QUOTE=HP HUNTER;603829]Racing in these two different conditions: Which one will you be quicker and faster in?

1. 29.00 Baro 900 feet DA
2. 29.80 Baro 900 feet DA[/QUOTE]

Re: How Much Does Density Altitude Affect ET
 

At first I thought there was a conflict in this statement. However are you saying at the same DA the car will perform similarly but not exactly the same depending on the differences in the factors that determine DA?