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.   This ECU is designed for the E36 M50TUB25 engine.  Please check your connector matches the header in the listed photo before purchasing.  This ECU only works with the Engine Code M50TUB25 (Bosch ECU from factory).  Works with manual & automatic transmissions.   Built in 4 Bar MAP sensor or 7 Bar MAP sensor included.   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:   M50TUB25 engine with the Bosch M3.3.1 ECU from factory Features: G4X PlugIn Key Features (where applicable): Up to 6D fuel and ignition mapping Precision closed loop cam control