ECUMASTER · EMU Black · EMU Classic
ECUMASTER pinout: EMU Black and EMU Classic
Both ECUs have a black and a grey FCI connector. The grey 24-pin plug is laid out the same on both — injectors, coils, AUX and power in the same places — while the black plug is 39 pins on the Black and 24 on the Classic. The tables below follow ECUMASTER’s official pinout sheets; check your unit’s revision before wiring.
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EMU Black — black 39-pin connector
| Pin | Function |
|---|---|
| 1 | Ignition coil #5 |
| 2 | EGT in #1 |
| 3 | Knock sensor in #1 |
| 4 | Analog in #2 |
| 5 | CLT in |
| 6 | WBO Vs |
| 7 | Camsync in #2 |
| 8 | Primary trigger |
| 9 | Flex fuel in |
| 10 | Switch #1 in |
| 11 | RS232 TXD |
| 12 | CAN H |
| 13 | Battery +12V (constant) |
| 14 | Ignition coil #4 |
| 15 | EGT in #2 |
| 16 | Knock sensor in #2 |
| 17 | Analog in #3 |
| 18 | TPS in |
| 19 | WBO Ip |
| 20 | VSS in |
| 21 | Camsync in #1 |
| 22 | WBO Rcal |
| 23 | Switch #2 in |
| 24 | RS232 RXD |
| 25 | CAN L |
| 26 | +5V supply |
| 27 | Power ground |
| 28 | ECU ground |
| 29 | Sensor ground |
| 30 | Analog in #4 |
| 31 | Analog in #1 |
| 32 | IAT in |
| 33 | WBO VGND |
| 34 | +5V supply |
| 35 | Analog in #5 |
| 36 | Switch #3 in |
| 37 | Analog in #6 |
| 38 | Sensor ground |
| 39 | Sensor ground |
EMU Black — grey 24-pin connector
| Pin | Function |
|---|---|
| 1 | Ignition coil #6 |
| 2 | H-bridge #1 winding A |
| 3 | H-bridge #2 winding A |
| 4 | AUX 6 |
| 5 | AUX 3 |
| 6 | Injector #4 |
| 7 | Injector #1 |
| 8 | Ignition coil #1 |
| 9 | Ignition coil #3 |
| 10 | H-bridge #1 winding B |
| 11 | H-bridge #2 winding B |
| 12 | AUX 5 |
| 13 | AUX 2 / Injector #8 |
| 14 | Injector #5 |
| 15 | Injector #2 |
| 16 | Ignition coil #2 |
| 17 | Power ground |
| 18 | Ignition +12V |
| 19 | WBO heater |
| 20 | AUX 4 / Tacho |
| 21 | AUX 1 / Injector #7 |
| 22 | Injector #6 |
| 23 | Injector #3 |
| 24 | Power ground |
EMU Classic — black 24-pin connector
| Pin | Function |
|---|---|
| 1 | EGT in #1 |
| 2 | Knock sensor in #1 |
| 3 | Analog in #2 |
| 4 | CLT in |
| 5 | WBO Vs |
| 6 | Camsync in #2 |
| 7 | Primary trigger |
| 8 | Ignition coil #5 |
| 9 | EGT in #2 |
| 10 | Knock sensor in #2 |
| 11 | Analog in #3 |
| 12 | TPS in |
| 13 | WBO Ip |
| 14 | VSS in |
| 15 | Camsync in #1 |
| 16 | Ignition coil #4 |
| 17 | ECU ground |
| 18 | Sensor ground |
| 19 | Analog in #4 |
| 20 | Analog in #1 |
| 21 | IAT in |
| 22 | WBO Vs/Ip |
| 23 | +5V supply |
| 24 | Power ground |
EMU Classic — grey 24-pin connector
| Pin | Function |
|---|---|
| 1 | Ignition coil #6 |
| 2 | Stepper motor #1 (A) |
| 3 | Stepper motor #2 (A) |
| 4 | AUX 6 |
| 5 | AUX 3 |
| 6 | Injector #4 |
| 7 | Injector #1 |
| 8 | Ignition coil #1 |
| 9 | Ignition coil #3 |
| 10 | Stepper motor #1 (B) |
| 11 | Stepper motor #2 (B) |
| 12 | AUX 5 |
| 13 | AUX 2 |
| 14 | Injector #5 |
| 15 | Injector #2 |
| 16 | Ignition coil #2 |
| 17 | Power ground |
| 18 | Power +12V |
| 19 | WBO heater |
| 20 | AUX 4 / Tacho |
| 21 | AUX 1 |
| 22 | Injector #6 |
| 23 | Injector #3 |
| 24 | Power ground |
Wiring notes from the pinout sheets
- EMU Black: black pin 13 (battery +12V, constant) must be connected — ECUMASTER marks it as required; the unit switches on from ignition +12V on grey pin 18.
- Connect every power ground and the ECU ground pin; sensors return to the sensor ground pins, not to the body.
- Injector and AUX outputs: 5 A max. Ignition outputs: 7 A (15 A peak). EMU Black H-bridges: 6.5 A.
- On the EMU Black, AUX 3–6 have built-in flyback diodes; AUX 1 and AUX 2 double as injectors 7 and 8.
Wideband sensor plug
| Plug pin | Bosch LSU 4.9 | Bosch LSU 4.2 |
|---|---|---|
| 1 | WBO Ip | WBO Vs |
| 2 | WBO VGND | WBO Rcal |
| 3 | WBO heater | WBO heater +12V (fused) |
| 4 | WBO heater +12V (fused) | WBO heater |
| 5 | WBO Rcal | WBO VGND (Vs/Ip) |
| 6 | WBO Vs | WBO Ip |
The EMU Black reads LSU 4.9 or LSU 4.2; the EMU Classic only LSU 4.2. The two sensors have different plug layouts, so wire the plug for the sensor you actually have.
See also: EMU Black vs EMU Classic · ECU wiring diagram · Wideband O2 sensor wiring
Use these pinouts in WireForge
- Place an ECU module and choose “ECUMASTER EMU Black” or “ECUMASTER EMU Classic” in its properties: both connectors appear with these pin names.
- Wire power, grounds, sensors and outputs to the named pins; injector and coil outputs are recognised from their names.
- Run the “ECU fuel injection” demo to see an EMU fire six injectors once the engine turns.
Questions
Can an EMU Classic harness be used with an EMU Black?
The grey connector matches pin for pin (the steppers become H-bridges, AUX 1/2 can be injectors 7/8). The black connector differs — 24 pins on the Classic, 39 on the Black — so it has to be repinned.
Why does my EMU Black need a constant +12V?
ECUMASTER’s pinout sheet states that the battery connection on black pin 13 is required for proper operation, in addition to the ignition +12V on grey pin 18.
Which pin is the crank sensor?
Primary trigger: black pin 8 on the EMU Black, black pin 7 on the EMU Classic. Cam sensors go to Camsync in #1 and #2.
More guides
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