[Wally]

The 1.6 release notes say ”Engine performance is now dependent on air density/temperature”. It will be interesting to see the effect of hotter/colder weather on Tuesday nights.

As this thread explains http://www.assettocorsa.net/forum/index.php?threads/engine-performance-is-now-dependent-on-air-density-temperatureny.32917/
Colder temperatures give better engine performance.

[Gratulin]

This features is an obvious precursor to adding rain support in AC

[Wally]

This features is an obvious precursor to adding rain support in AC

[Bird]

cold: more powah, less grip.  Neat
It's realistic, I like the sound of it.

[Glen73]

Those smaller air molecules    Hopefully it takes into account following someone closely. If it is just the weather forecast temperature than that's boring because that will be across the whole field.

[marty]

I noticed this quite a bit tonight as I was easily able to beat my PB set in RSR conditions at Brands in the 72D running much more fuel and even lower grip. I think had I pushed and had no traffic the temps around 14c ambient would have been about .8 quicker then 26c in this car.