Product SKU: LNK E36X
The Link G4X range of engine management systems builds upon the previous G4+ ECUs by featuring an all new micro-processor, an upgraded communications chip and expanded data logging. These improvements allow for a more responsive and accurate tune, much faster download speeds and far greater internal data logging capacity.
The Link G4X range of engine management systems are well known for delivering class-leading performance without sacrificing factory levels of drivability. The G4X plug-in ECUs are designed to be the most complete plug-in solution yet.
This BMWLink E36X plug-in ECU will save you time and money as it will plug straight into the vehicle’s original wiring loom without the need for messy adapter harnesses. It replaces the original circuit board inside the factory ECU enclosure and mounts using the factory brackets.
This BMWLink E36X plug-in ECU is suitable for the models listed below:
- 1993-1995 BMW 325i or 325is with M50B25TU 2.5L 6-cylinder Engine, automatic or manual transmission (uses Bosch M3.3.1 ECU from factory)
Please check your connector matches the header in the listed photo before purchasing.
All Link G4X plug-in ECUs come with a base map. While these maps are designed to help save time for you and your tuner, it is essential that these are used simply as a starting point for further tuning.
The engine can easily be converted to speed density by removing the air flow meter and instead using a suitable MAP and air temperature sensor. Likewise, this ECU can also be setup to control boost electronically with in-cabin adjustment. This eliminates the need to purchase a separate electronic boost control system.
The vehicle’s original sensors & actuators are used except for the following exceptions:
- MAP sensor – This ECU comes with an on-board 4.0Bar (up to 44psi boost) or 7.0Bar (up to 87psi boost) MAP sensor. Alternatively, an external MAP sensor can be connected to the existing wiring that was previously used for the mass air flow sensor or to one of the analog inputs of the G4X’s expansion connector using the XS Loom (sold separately).
- Inlet Air Temp sensor (IAT) – An appropriate IAT sensor (available separately), should be installed just prior the throttle body even on models that have a factory fitted IAT sensor near the airbox. The factory IAT wiring can be used on models that have a factory fitted IAT sensor however an aftermarket IAT sensor is highly recommended. From factory the E36 (M50TUB25) are fitted with an IAT sensor fitted inside the air flow meter.
- Injectors – The G4X BMWLink Plug-In ECU is NOT designed to be used directly with low impedance injectors. All models this ECU is designed for are fitted with high impedance injectors from factory so no changes are necessary.
- Internal Ignitor - The G4X BMWLink plug-in ECU is equipped with internal ignitors to meet the requirements of the factory wiring loom. (This means that ignition coils are wired directly to the ECU). Please refer to the manual for more information.
Extra sensor inputs
The expansion connectors on the Link G4X board is provided to allow the easy connection of additional ECU inputs. These may be used for functions such as driver adjustable boost control, switchable fuel/ignition maps, wideband lambda input, external MAP sensor, fuel pressure and oil temp/pressure.