I guess you can edit the replay file with some help of the MPR file format specification. http://www.lfs.net/?page=MPR
Quote from Litro :I remember boothy or somebody did some tutorial somewhere about this, but can find it anymore. https://www.lfsforum.net/showt ... php?p=1674941#post1674941 takes a bit of time to test it out and get it right, but it's easy enough to do. You can't change the wind though otherwise it goes OOS.