An engine control system includes an integrated engine control module assembly having an engine control module and an adapter module. The integrated engine control module assembly further includes a first connector, a second connector, and a hermetic enclosure. The first connector includes a connection circuit configured to connect the integrated engine control module assembly to engine hardware. The second connector is configured to connect the adapter module to engine hardware. The hermetic enclosure houses the engine control module and is configured to protect the engine control module from environmental conditions.