Subnautica · Upgrade
/ Engine Efficiency Module
The Engine Efficiency Module recycles heat by-product to minimize power inefficiencies. It is compatible with the Seamoth and Prawn Suit, and its effect stacks.
Source context
Seamoth and Prawn Suit Upgrades · Subnautica; edition/version unspecified; mixed Seamoth/Prawn-compatible modules
Values follow the linked reference and its listed mode or variant. Unknown upgrade costs remain unspecified.
Game artwork © Unknown Worlds Entertainment. Artwork reference.