So I noticed that my summer tune needed to be changed when the temperature got low here. I pretty much dropped everything by about 3-4% while trying to keep the same overall curve. What changes do you have to make to your tune when the weather changes?

 

I notice the same thing. I can't remove as much fuel when in the colder months. Its best to use both files on the SAFC. One for cold days and one for hot days.

For a few days I had mine at -20 from 1200-2600 rpm. Now I can only have it around -10 to -14 otherwise the engine will start bucking around.