UPDATE: SimFX gets Simulated Traffic Contrails, further AI optimizations & more!

UPDATE: SimFX gets Simulated Traffic Contrails, further AI optimizations & more!

Hello Captain!

Thank you! Your incredible support has propelled SimFX to become our top-selling product ever—the GOAT. With how much love you've shown, we're starting to think you all may just consider this a "must have"!?

Support requests are also at the bare minimum too, with a common question being "how do i install this?". This is a great indicator of new-user reach, because it's a simple drop into the Community folder. We're very lucky to have a team great of internal testers at Area 42 that make this possible. Thank you for always working hard to help us put out rock solid products.

There's also been a buzz about wanting cool effects like wing vortices and engine condensation. Here's the scoop: SimFX is designed as a one-size-fits-all kind of deal, so some of those plane-specific effects aren't available.

But, our specialized "Immersion Packs" are on the horizon. They're going to have all the customization options, performance, and artistic flair you've come to expect from us, without wondering if specific liveries are supported. Immersion Packs will also work with multiple variants of an aircraft & we're already working with the best 3rd party devs in the business to ensure their aircraft support our effects.

You may remember our legendary Immersion Packs we had in Prepar3D, imagine the awesomeness we'll bring to MSFS! Stay tuned, they're on their way.

OK, this SimFX update brings some cool changes. let's get right to the changelog:


  • Simulated Contrails Say goodbye to poorly optimized AI Traffic add-ons or Multiplayer chaos; this feature is perfect for those who cherish the skies all to themselves. We simulate other travelers painting the sky with contrails without affecting your system's performance.
  • Contrail logic We moved away from using the sim's contrail logic and created our own. This results in more realistic contrails that fade in and out based on the aircraft's power setting, altitude, temperature and humidity.



  • Fixed an issue where afterburner effects would not work on some aircraft.
  • Fixed an issue where exhaust heat blur would not work on some piston aircraft.
  • Fixed an issue where AI/Multiplayer contrails would fade in/out frequently when using Live Weather.
  • Fixed an issue where changing the scale of waves would not apply on the Water Landing effect.



  • Improved the state indicators shifting from circles to squares.
    • Green (outline) = Effect is enabled and ready to be displayed.
    • Green (fill) = Effect is actively being shown.
    • Grey (outline) = Effect is disabled by the user or is unavailable.
  • Improved user contrail performance.
  • Improved performance of AI/Multiplayer Extended Contrails.
  • Improved the algorithm controlling the opacity of AI/Multiplayer Extended Contrails.
  • Improved the blur levels of heat blur effects. This will be recalibrated again after SU15 releases.
  • Reduced the intensity of Auroras while on the realistic setting based on user feedback.
  • Dynamic Quality now sets to Performance by default.
  • Reworded AFT/FWD adjustment options for engine thrust effects.


  • Removed the Wind Impact option from Misc. Heat Blur. This was creating more issues than it was worth.


✅ Available today via //42 Direct:

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