Afterburners provide a speed boost from 105% to 171%. Afterburners fit into a Mid-slot and scale with the ship classes: 1MN for Frigate-class, 10MN for Cruiser-class and 100MN for Battleship-class ships. Compared with Afterburner skill.
Changes due to the Apocrypha patch have allowed both Microwarpdrives and Afterburners to be used in complexes (previously only Afterburners were allowed).