Engines take modules. Warning, requires a lot of power.
Mods introducing new content into the game.
Transportation of the player, be it vehicles or teleporters.
Augmented or new ways of transporting materials - belts, inserters, pipes!
.
Engine speed is calculated by power consumption not crafting speed
The recipe is just a dummy recipe to burn the fuel but doesn't actually have an in game product
If quality modules increase power consumption, then speed will increase
