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 3SGTE engine in the models specified below.  Please check your pinoutconnector matches the header in the listed photo before purchasing.   This ECU works for manual transmissions only.   ECU does not fit in the original housing of non-turbo cars  Most factory features are supported.  Check the features tab for I/O expansion options. This ECU will need a modification before E-Throttle is usable. Suitable applications:  Toyota MR2 1993 onwards (Gen3 3SGTE) not including RedTop Beams  Celica ST205   Carlos Sainz Edition GT-Four RC Group A Rallye Download manual here Download full specification PDF here