Climbing at the specified Indicated Air Speed will allow you to reach 6 kilometers in the least amount of time.

Make sure to enable indicated air speed in the options before using information in this guide.

The chart contains most propeller airplanes.

• Set all available radiator flaps to 100% (open).
  
• Set mixture to rich as appropriate.
  
• Set propeller pitch to 100%.
  
• Adjust mixture accordingly throughout flight to maintain maximum engine RPM and optimal horsepower, subject to altitude.
  
• Change supercharger gears at recorded horsepower output/elevation.

* It is not possible to climb to 4000m from SL on WEP without overheating the engine.
** Recommend using auto prop pitch to avoid over revving the engine. Otherwise, there is no prop governor to prevent over revving.

Based on chart made by The_Kiwi and information from data sheets available on War Thunder forums.

https://forum.warthunder.com/index.php?/forum/1197-italy/
https://docs.google.com/spreadsheets/d/1hgHbWlSjefFhCqOUeGpoKQntdQDPG32X7XQo9EqDF00/

Support the original chart creator here:

Email: jlwarthunder@gmail.com
YouTube channel: https://www.youtube.com/c/TheKiwi
Patreon page: https://www.patreon.com/The_Kiwi

Some additional contributions made by:
ZadaNotZaida

If you find any mistakes or have additional information contact me and I will add it to the chart.