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weather calculations for racing engine tuning

ProCalc
Jetting
Calculator

Jet your car from anywhere with an internet connection. Have a smartphone? You now have a portable jetting calculator.

FREE
Weather
for tracks

Real-time density altitude from current weather data at various tracks including: NHRA & IHRA dragstrips, road courses, dirt ovals.

ProTune
Custom
Setups

Get your MFI fuel system setup programmed into ProCalc. Even get your dyno data added. You get 1 year of access to ProCalc too!

Thanks for visiting our site. We provide real-time, historical, and forecast weather data for racing engine tuning. We also provide engine tuning tools for mechancial fuel injected racing engines. We are constantly adding tracks to the site. If you'd like to see your track added to the list, send it over. Learn more about this site and it's creators or read some of the articles we've written.


What's New

March 31, 2020

New Month – Same Quarantine

We hope everyone is staying safe and healthy! If you would like a little reading to do while staying home, check out our latest article over at RacingJunk.com.

Elevation and Atmospheric Factors in Motorsports Performance

March 23, 2020

Keeping busy

We are staying in and staying safe but we are still adding tracks to this site. Here are some of the recent tracks we've added.

We want to add all motorsports tracks and we've got lots of time right now with things at on hold. Send us your track and we'll add it to our list.

March 16, 2020

Stay safe and healthy!

We hope everyone is staying safe and healthy during these current events. If you are stuck at home and want something to read, check out our articles on this site and around the web.

Air Density Online articles on weather and engine tuning

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