ok cool. so with corrections i might not have lost as much as i think i did. last time i ran it was pretty cold with no humidity. thanks for the look up f8l.

next question, where would i look this up for myself and become more affluent with it? any good sites to go too?

 

Onxy, You are soo right

My buddy ran a 8.30@157mph in his GN in Phoenix and everyone was stoked. I thought it was no big deal till I looked up DA type info. LOL

Goshawk23,
NP bud. Here in Sac even with our near sea level track we can have swings off -1000DA and +2000DA. All depends on the time of year

For anyone wanting to find this info out on there own here ya go:

Weather info. As long as you know the date and time for your city it's easy to find all the pertinant info if you do a lil searching. May take a sec to figure out how to use the site but very easy after that.
You will need: Altitude (city or track), Temp, Altimeter in inches HG, Dew Point in Degress Farenheit.

http://www.weatherunderground.com/

Input all that info at this site. Click Calc and it tells you your Density Altitude below.

http://wahiduddin.net/calc/calc_da.htm

If you want to use NHRA correciton factors or any other cool automotive calculators go here.

http://www.smokemup.com/auto_math/index.php

There is a site somewhere which you can do all this in one plce but I have not seen it, just heard of it. If you want any trouble with getting this to work feel free to ask. I'd like more racers to know how to use this because there will be less people unhappy because of verhicle performance after an upgrade OR someone claiming to have made tons more power because they ran faster at the strip when in reality it was the weather that made the HP

 

hey thanks a lot f8l. i saved each site in my favs. now i am gonna do some homework

 

NP man,

Ohh the altitude part you will have to figure out form your track or near city because the weather site doesnt contain that info.

Have fun

 

hey guys thanks well that time is more like it. I did loose some low end but the truck feels like it pulls better mid and up high. she really takes off at 3500rpm. Maybe when I gt a feew more mods and an allen tune we can see a big increase. thanks everyone.

 

F8L,

Thanks for the input.

 

great info, thanks

 

You're welcome

Maybe we should get on of the mods to create a new post about DA and racing techinques and make it a sticky?

 

that would be cool, I am suprised my pissed off thread has had so much response. thanks F8 Z&! I appreciate it.