NA, NB1 & NB2 Available. Please select the correct option from the drop-down list

Easy to install. Affordable. Reliable.
G4X PlugIn ECUs offer the latest in engine management technology, designed to easily maximize the potential from your car.
This ECU fits inside the factory OEM enclosure. Installation is a breeze, with no alteration of the factory wiring loom required for the models listed below.

Designed for the MX5 B6ZE(RS) / BP 1.8L engine. Options also available for NB1, NB2.

• Please check your connector matches the header in the listed photo before purchasing.

• This ECU works for manual transmissions only.

• Includes onboard 4 bar or 7 bar MAP sensor

• Knock control not available on this ECU.

• Most factory features are supported

• Check the features tab for I/O expansion options
  
  Suitable applications:
  
  1600 1989-1997 NA MX5
  
  1800 1989-1997 NA MX5
  
  1800 323 GTX
  
  1800 323 GTR

  
  Please note: This ECU does not fit NB, NC, ND models. This unit is only suitable for the 2 plug ECU and not the later 3 plug models)