Texas Motorplex — Density Altitude
Ennis, TX · Track elevation 515.1 ft. Get today's air before you touch a jet or a dial-in.
No connection? Enter your weather station readings — the math is identical.
Density altitude
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Racing the air at Texas Motorplex
The physical elevation here is 515.1 feet, but your engine doesn't read a survey marker — it reads density. On a hot, humid afternoon the density altitude at this track can run thousands of feet above the physical elevation, and your car slows exactly as if you'd towed it up a mountain. On a cool, dry morning it can run below it.
Three moves once you know today's number: check what the air does to your ET with the weather-corrected ET calculator, size your jet change with the jetting calculator, and if you bracket race, expect your dial to move with the density trend through the day — the pattern is in the bracket racing math guide.
About this track: NHRA national event — FallNationals