The Madman EMS2 engine monitoring system has its roots in the small aircraft industry from around 2005.
Initially it was a reprogrammed aircraft instrument, but it was quickly redeveloped to be more vehicle specific while always retaining the reliability and accuracy of the aviation industry.
Later the EMS2 got more functions and a new housing.
Along the way the EMS1 was created specifically for the automotive market. With its surface mounted design and larger screen it had appeal to a new audience. The EGT (EGT-only gauge) and CLD (Coolant Level Detector) were added to the lineup.
Both the EMS1, EMS2 and EGT1 were phased out in 2019 due to an aging design and parts scarcity, the EMS3 was released later that year. The EMS3 with its bright colour screen and round enclosure replaces the square monochrome EMS2 but the EMS3 remains backwardly compatible to legacy EMS2 installations.