Density altitude and 1/4 times how it affect to our cars!

[kennis827]

Hi Folks,

I have been researching how the density altitude (DA, involving altitude, humidity, temperature) can affect our cars performance such as 1/4 miles, trap speed...etc.

The only website i found is from dragtimes, http://www.dragtimes.com/da-density-...calculator.php

I live in a place that has almost 5000 ft of density altitude, using vbox(the most accurate tool around), i am hitting 12.8s-12.9s @ 119mph (0-60 at 4.7-5.0s), using the link calculator, i got this result after corrected data by dragtimes:

"stock naturally aspirated engine" 12.0s @ 126mph
"extensively modified turbocharged engine" 12.46 @ 122mph

I am not sure if our stock twinturbo engine should consider as "stock NA engine" or "extensively modified turbocharged engine"?

As it's a simple calculator, it takes consideration to all type of cars, but how close it can compare to our cars? Less DA=more dense air, which is better for the engines, if im not wrong, when the air pressure is not enough, our engine would increase some boost to compensate the loosing air pressure... does somebody know if these corrected data can fit on our cars? If so, in which category correction it fit? Or my m6 cp 2014 is just under performance!