|This article is about Cyclops Engine Efficiency Module for the Cyclops. You may be looking for Engine Efficiency Module which is for the Seamoth or the Prawn Suit.|
A single Cyclops Engine Efficiency Module can be found in the Aurora's drive room, located inside of a console. Obtaining this module unlocks its blueprint, allowing further modules to be crafted. This upgrade does not stack.
- The item description used to say "Just for you, Jacksepticeye!", a nod to streamer and Youtuber Jacksepticeye, who helped popularize the game.