Active Terrain Fire Spreader - Vanilla-Expanded/VanillaExpandedFramework GitHub Wiki
TerrainCompProperties_FireSpreader allows the terrain to spread fire super fast
        public int spreadTimer;It is a comp class, so you just add it in XML in the <terrainComps> tag of the ActiveTerrain.
<terrainComps>
	<li Class="VEF.Maps.TerrainCompProperties_FireSpreader">
		<spreadTimer>8</spreadTimer>
	</li>		
</terrainComps>