BMW M50 VANOS Sport PNPECU Wiki V5

Revision as of 16:14, 22 June 2023 by Gunni (talk | contribs) (Sport adapter pinout information)
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PNPECU MaxxECU M50 VANOS 413/506 solution

This page refers to version 5 PNPECU M50 VANOS solution only. Make sure to check the adapter tag for your version.

19/4/2023 - Version 5 is latest.

PNPECU has developed the M50 solution to satisfy customer requests to allow the M50 engine to be fully controlled

Adapter extra connector information

See bottom of this page for the pinouts of these auxiliary connectors

X6000-1 and X6000-5 terminals for spare functions (12V, GROUND, CANBUS HUB)

Transmission compatibility

This is a complicated subject as at the time of writing there are solutions for external control of DCT, 6HP and 8HP transmissions out of BMWs, at the same time MaxxECU provides it´s standardized can bus output which multiple transmission controllers are able to make use of for just about any transmission out there.

There is no direct support for the original 4HP/6HP BMW TCU and is very unlikely it will ever exist.

For direct PNP communications with a stock BMW DCT transmission with a BMW TCU refer to this page - https://www.maxxecu.com/webhelp/advanced-bmw_dct.html

what this means is that the BMW TCU believes it´s listening and talking to an OEM BMW DME. The MaxxECU is not directly controlling the transmission but sending and receiving signals that emulate the BMW DME.

MaxxECU is working on adding other BMW newer transmissions to the emulation compatibility list.

100% compatible with all manual gearboxes!

M50 VANOS OEM Sensors Usage

  • MAF is not used - the signal is available in the adapter housing (X6003-27) if wanted.
  • Lambda sensors are not used
  • Air temp sensor is not used - new fast sensor is supplied through stock wiring in PNPECU ECU kits not adapters - fit BMW 13622243946 (M12 threads) to have a fast-acting sensor in the intake, otherwise fit an extension to the air temp sensor and fit the new sensor in the intercooler piping.
  • Knock sensors - not available in the MaxxECU Sport


  • Camshaft signal - used as OEM
  • Coolant temperature - used as OEM
  • TPS sensor - used as OEM
  • Vehicle Speed Sensor Rear Right - used for vehicle speed
  • AC signals from vehicle - used as OEM
  • AC Compressor Enable - used as OEM
  • AC Compressor Activate - used as OEM

M50 VANOS OEM Actuator Usage

  • Ignition coil wiring
  • Tachometer signal
  • Fuel pump relay
  • Idle control valve
  • Vanos advance
  • Check engine indicator
  • AC Compressor relay
  • Fuel consumption output
  • EVAP Solenoid


CAN BUS Compatibility

The E36/E34 the M50 originally came in did not communicate with the rest of the vehicle via CAN BUS. However, thanks to the MaxxECU it is possible to fit the engine into other BMWs that require information via CAN BUS

5/11/2022 -

  • E46 - compatible with BMWs of similar vintage
  • E39 - compatible with BMWs of similar vintage
  • E9x - compatible with BMWs of similar vintage

MaxxECU provides OEM BMW CAN BUS output for the above BMW vehicles. It also supports a vast array of other cars which a M50 can be fitted to thanks to that. Refer to this webpage for latest options and relevant information - https://maxxecu.com/webhelp/can-oem.html

Options at ordering

Not everyone is going to need or want the same thing with their ECU conversion.

Ignition outputs

  • Smart coils - Customer will install logic coils in place of original coil wiring
  • Stock coils - Adapter housing provides ignition drivers.

ECU Model

  • Sport - 2 Analog inputs are spare, 1 Digital inputs are spare, 1 Low side output is spare


MaxxECU DCT Adapter loom This is a selectable option so that the webstore doesn´t incorrectly calculate shipping cost

Injector This is a selectable option so that the webstore doesn´t incorrectly calculate shipping cost


Sport adapter pinout information

Below is the pin functions of the M50 V5 adapter.


Race Connector 1 - 48pin
Pin number Function Information
A1 GPO 4 IAC CLOSE
A2 IGN 1
A3 IGN 2
A4 GPO 8 / Tacho output
B1 GPO 5 IAC OPEN
B2 IGN 3
B3 IGN 4
B4 GPO 1 CHECK ENGINE LIGHT
C1 AIN 5 Spare input
C2 IGN 5
C3 IGN 6
C4 GPO 2 FUEL PUMP RELAY
D1 WBO2 Heater
D2 AIN 6 Spare input
D3 AIN 7 Spare input
D4 GPO 3 ECONOMY GAUGE
E1 CAN High Spare AUX 14/5
E2 CAN Low Spare AUX 14/6
E3 GND Shield
E4 AIN 8
F1 Coolant temp input
F2 Air temp input
F3 WBO2 VREF
F4 WBO2 VS
G1 5V Supply output
G2 TPS
G3 WBO2 IP
G4 WBO2 RCAL
H1 Sensor GND
H2 Trigger GND
H3 Trigger
H4 Home
J1 AIN 1 AC ENABLE INPUT
J2 AIN 2 AC COMPRESSOR ACTIVATE INPUT
J3 AIN 3 Spare input AUX 14/7
J4 AIN 4 Spare input AUX 14/8
K1 INJ 1
K2 INJ 2
K3 DIN/VR 1 VSS
K4 DIN/VR 2 Spare input AUX 14/9
L1 GPO 11 AC COMPRESSOR RELAY
L2 GPO 12 VANOS SOLENOID
L3 INJ 6
L4 Power GND
M1 INJ 3
M2 INJ 4
M3 INJ 5
M4 12V


Auxiliary connector - 14pin
Pin number Function Information
1 12V SUPPLY
2 5V SUPPLY
3 ANALOG GROUND
4 POWER GROUND
5 CAN HIGH
6 CAN LOW
7 AIN 3
8 AIN 4
9 DIN 2
10 AIN 5
11 5V SUPPLY
12 5V SUPPLY
13 ANA GND
14 AIN 8




Adapter ECU side connector X6000
Pin number Function Information
X6001-1 SWITCHED 12V
X6001-2 SWITCHED 12V
X6001-3 SWITCHED 12V
X6001-4 SWITCHED 12V SPARE FROM MAIN RELAY
X6001-5 SWITCHED 12V SPARE FROM MAIN RELAY
X6001-6 POWER GROUND
X6001-7 POWER GROUND SPARE
X6001-8 POWER GROUND
X6001-9 POWER GROUND SPARE
X6002-1 INJECTOR 1
X6002-2 INJECTOR 2
X6002-3 INJECTOR 3
X6002-4 INJECTOR 4
X6002-5 INJECTOR 5
X6002-6 INJECTOR 6
X6002-13 IGNITION 1
X6002-14 IGNITION 2
X6002-15 IGNITION 3
X6002-16 IGNITION 4
X6002-17 IGNITION 5
X6002-18 IGNITION 6
X6003-1 COOLANT TEMP SENSOR
X6003-2 AIR TEMP SENSOR
X6003-3 TPS
X6003-7 CRANK +
X6003-8 CRANK -
X6003-12 CAN High FROM ECU
X6003-13 CAN High Spare CANBUS connection
X6003-14 CAM SYNC
X6003-25 CAN Low FROM ECU
X6003-26 CAN Low Spare CANBUS connection
X6003-27 MAF Signal available but not used
X6003-28 KNOCK 1 CYLINDERS 1-3 - NOT USED
X6003-29 KNOCK 2 CYLINDERS 4-6 Ö NOT USED
X6003-37 AUTO P/N SIGNAL available but not used
X6003-38 AUTO TORQUE REDUCTION available but not used
X6003-40 VSS
X6003-43 KNOCK GROUND
X6003-50 AC ENABLE
X6003-51 AC PRESSURE
X6004-1 VANOS SOLENOID
X6004-12 ICV OPEN
X6004-13 TACHO
X6004-17 CHECK ENGINE LIGHT
X6004-18 ECONOMY GAUGE
X6004-22 ICV CLOSE
X6004-24 EVAP NOT USED
X6004-25 FUEL PUMP RELAY
X6004-26 AC COMPRESSOR RELAY
X6004-27 5V SUPPLY FROM ECU
X6004-28 5V SUPPLY TO AUX 14/2
X6004-29 5V SUPPLY TO AUX 14/11
X6004-30 5V SUPPLY TO AUX 14/12
X6004-37 ANALOG GROUND ECU E3
X6004-38 ANALOG GROUND ECU H1
X6004-39 ANALOG GROUND TO AUX 14/3
X6004-40 ANALOG GROUND TO AUX 14/13
X6005-1 12V SWITCHED FROM MAIN RELAY
X6005-2 12V SWITCHED FROM MAIN RELAY
X6005-3 N/A
X6003-4 PWR GND
X6003-5 CAN HIGH Spare CANBUS connection
X6003-6 CAN HIGH Spare CANBUS connection
X6003-7 PWR GND
X6003-8 CAN LOW Spare CANBUS connection
X6003-9 CAN LOW Spare CANBUS connection