I would like to see the power curves for a mod engine (not turbo).
How can I look at that?

Copy .veh file from LFS/mods/vehicles/ to lfseditor/data/veh folder.
Open LFSeditor,load the desired .veh file in Vehicle editor
Click "edit engine" on top right corner menu.

Thanks, do you know if I can extract/plot values? It would be nice to draw power on each gear!